User s Manual LG Programmable Logic Controller G3F AT4A GLOFA G4F AT3A LG Industrial Systems
CONTENTS
Chapter 1. INTRODUCTION 1.1 Features 1-1 Chapter 2. SYSTEM CONFIGURATION 2.1 Example of System Configuration 2-1 Chapter 3. SPECIFICATIONS 3.1 General Specifications 3-1 3.2 Performance Specifications 3-2 3.3 Names of Parts and Functions 3-3 3.3.1 G3F-AT4A 3-3 3.3.2 G4F-AT3A 3-4 3.3.3 Names of Parts and Functions 3-5 3.4 Setting Procedure for Each Function 3-7 3.4.1 Setting the Setting Range Selection Switch 3-7 3.4.2 Adjusting the Volume 3-8 Chapter 4. INSTALLATION 4.1 Installation 4-1 4.1.1 Installation Ambience 4-1 4.1.2 Handling precautions 4-1 Chapter 5. GM PROGRAMMING 5.1 Function Block 5-1 5.1.1 Timer Starting 5-1 5.2 Program for Comparing and Outputting the Setting Times of Analog Timers 5-2 5.2.1 System Configuration 5-2 5.2.2 Initial Settings 5-2 5.2.3 Program Description 5-2 5.2.4 Program 5-3 Chapter 6. GK PROGRAMMING 6.1 I/O Signals 6-1 6.1.1 G3F-AT4A 6-1 6.1.2 G4F-AT3A 6-1
6.1.3 Example for Executing the Anal og Timer T00 by Program 6-2 6.2 Program for Comparing and Outputting the Setting Times of Analog Timers 6-3 6.2.1 System Configuration 6-3 6.2.2 Initial Settings 6-3 6.2.3 Program Description 6-3 6.2.4 Program 6-4 Chapter 7. TROUBLESHOOTING 7.1 Error Code 7-1 7.2 Troubleshooting Procedure 7-2 7.2.1 RUN LED off 7-2 7.2.2 The Contact Indication LED for the Timer Operation does not Turn on When the Timer Starts its Operation 7-3 7.2.3 The Operation Contact does not Turn on Though the Setting Time has Passed after the Start of the Timer 7-4 Chapter 8. TEST RUN 8.1 Run Procedure 8-1 Chapter 9. DIMENSIONS 9.1 Dimensions 9-1 9.1.1 G3F-AT4A 9-1 9.1.2 G4F-AT3A 9-2
Chapter 1. INTRODUCTION Chapter 1. INTRODUCTION These modules are combined and used with the CPU of the GLOFA PLC GM 1/2/3/4 series and MASTER- K1000S/300S. The G3F AT4A is used in the GM 1/2/3 series and MASTER-K1000S series. The G4F AT3A is used in the GM4 series and MASTER-K1000S series. Hereafter, they are commonly called Analog Timer Module (A/T module). The A/T module performs On Delay operation for a setting time. 1.1 Features The A/T module has the following features. 1) Up to 16-point (G3F AT4A) and 8-point (G4F AT3A) analog timers are applicable. 2) The range of setting time is very wide. (0.1 to 600 sec) 3) Time adjustment is easy. 4) A LED is used to indicate the timer operation status. 5) The backup function for setting time is available. 1-1
Chapter 2. SYSTEM CONFIGURATION Chapter 2. SYSTEM CONFIGURATION 2.1 Example of System Configuration The following shows the system configuration of the GLOFA GM3 series where the A/T module is mounted. Battery RS-232C Cable General purpose PC Diskettes(GMWIN) Memory Module CPU Module Main Base (GM3-B0_IM) Expansion Cable Expansion Base (GM3-B0_IE) G3F-AT4A 2-1
Chapter 3. SPECIFICATIONS Chapter 3. SPECIFICATIONS 3.1 General Specifications Table 2.1 shows general specifications of the GLOFA GM series and MASTER-K series. No Item s Specifications Standard 1 2 3 4 Operating ambient temperature Storage ambient temperature Operating ambient humidity Storage ambient humidity 5 Vibration 6 Shocks 7 Noise immunity 0 ~ 55-25 ~ 75 5 ~ 95%RH, non-condensing 5 ~ 95%RH, non-condensing Occasional vibration Frequency Acceleration Amplitude Sweep count 10f57 Hz - 0.075 mm 57 f150 Hz 9.8 {1G} - Continuos vibration 10 times in each direction for Frequency Acceleration Amplitude X, Y, Z 10f57 Hz - 0.035 mm 57f150 Hz 4.9 {0.5G} - *Maximum shock acceleration: 147 {15G} *Duration time :11 ms *Pulse wave: half sine wave pulse( 3 times in each of X, Y and Z directions ) Square wave impulse noise Electrostatic discharge Radiated electromagnetic field Fast transient burst noise Severity Level 1,500 V Voltage :4 kv(contact discharge) 27 ~ 500 MHz, 10 V/m All power modules Digital I/Os ( Ue 24 V) Digital I/Os (Ue < 24 V) Analog I/Os communication I/Os Voltage 2 kv 1 kv 0.25 kv 8 Operating Free from corrosive gases and excessive dust atmosphere 9 Altitude for use Up to 2,000m 10 Pollution degree 2 or lower 11 Cooling method Self-cooling [Table 2.1 ] General specifications REMARK 1) IEC(International Electrotechnical Commission) : The international civilian organization which produces standards for electrical and electronics industry. 2) Pollution degree : It indicates a standard of operating ambient pollution level. The pollution degree 2 means the condition in which normally, only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation shall be expected. 3-1
Chapter 3. SPECIFICATIONS 3.2 Performance Specifications Table 3.2 shows the performance specifications of the A/T module. Item s G3F AT4A Specifications G4F AT3A Timer point 16 points 8 points Timer setting value range 0.1 to 1.0 sec 1 to 10 sec 10 to 60 sec 60 to 600 sec Setting can be done for each individual point Backup Method For backup, set the operation mode selection switch to the TEST side. Setting Method Setting by the adjustment volume. Timer Accuracy ± 2.0% (For maximum value) Operating Indicator Timer Operation indication LED : 16 pts Timer Contact indication LED : 16 pts Timer Operation indication LED : 8 pts Timer Contact indication LED : 8 pts Current consumption 0.3 A (5 VDC) 0.2 A (5VDC) [Table 3.3] Performance specifications 3-2
Chapter 3. SPECIFICATIONS 3.3 Names of Parts and Functions The following gives the names of parts of the A/T module. 3.3.1 G3F AT4A [Side] [Front] 3-3
Chapter 3. SPECIFICATIONS 3.3.2 G4F AT3A [Side] [Front] 3-4
Chapter 3. SPECIFICATIONS 3.3.3 Names of Parts and Functions The following gives names and function of parts of the A/T module. No. Name Descriptions Timer contact indication LED Indicates the On/Off state of the contact of Analog timers (T00 to T15) (On state : turn on, Off state : turn off) LED Contents LED Contents 00 Contact of the Analog Timer T00 08 Contact of the Analog Timer T08 01 Contact of the Analog Timer T01 09 Contact of the Analog Timer T09 02 Contact of the Analog Timer T02 10 Contact of the Analog Timer T10 03 Contact of the Analog Timer T03 11 Contact of the Analog Timer T11 04 Contact of the Analog Timer T04 12 Contact of the Analog Timer T12 05 Contact of the Analog Timer T05 13 Contact of the Analog Timer T13 06 Contact of the Analog Timer T06 14 Contact of the Analog Timer T14 07 Contact of the Analog Timer T07 15 Contact of the Analog Timer T15 Timer operation indication LED Indicates the On/Off state of the contact of Analog timers (T00 to T15) (On state : turn on, Off state : turn off) LED Contents LED Contents 16 Coil of the Analog Timer T00 24 Coil of the Analog Timer T08 17 Coil of the Analog Timer T01 25 Coil of the Analog Timer T09 18 Coil of the Analog Timer T02 26 Coil of the Analog Timer T10 19 Coil of the Analog Timer T03 27 Coil of the Analog Timer T11 20 Coil of the Analog Timer T04 28 Coil of the Analog Timer T12 21 Coil of the Analog Timer T05 29 Coil of the Analog Timer T13 22 Coil of the Analog Timer T06 30 Coil of the Analog Timer T14 23 Coil of the Analog Timer T07 31 Coil of the Analog Timer T15 3-5
Chapter 3. SPECIFICATIONS No. Name Descriptions Timer number selection switch Timer No. Used to select an analog timer (T00 to T1 5) whose time will be adjusted. Selected Timer Timer No. Selected Timer 0 T00 8 T08 1 T01 9 T09 2 T02 A T10 3 T03 B T11 4 T04 C T12 5 T05 D T13 6 T06 E T14 7 T07 F T15 Operation mode selection switch Used to adjust and backup the timer value, check the adjusted value and select the operation mode for each timer.. RUN :Position for normal operation. SET :Position for adjustment of the timer value of the timer selected by. TEST : Position for manual chec k and backup of the adjusted timer value. Adjustment Volume Setting range selection switch Used to adjust the timer value of an analog timer. Used to select the setting range for each analog timer. RUN LED Indicates the operation status of the A/ T module. ion : Normal operation ioff : 5 VDC line disconnection or A/T module defect. REMARK Only T00 to T07 are available in the G4F AT3A. T08 to T15 are not processed. 3-6
Chapter 3. SPECIFICATIONS 3.4 Setting Procedure for Each Function 3.4.1 Setting the Setting Range Selection Switch 1) Setting Range Selection Switch (1) G3F AT4A (2) G4F AT3A 2) Setting Range Selection Set the time range for each analog timer (T00 to T15) by the setting range selection switch Time range 0.1 to 1.0 sec 1 to 10 sec 10 to 60 sec 60 to 600 sec Switch name Txx 1 Off On Off On Txx 2 Off Off On On xx : Means the number of an analog timer (00 to 15) [Example] When setting the time range of the analog timer T03 to 1 to 10 sec (Set this switch to On) (Set this switch to Off) 3) Factory Setting is 0.1 to 1.0 sec for All Analog Timers. 3-7
Chapter 3. SPECIFICATIONS 3.4.2 Adjusting the Volume 1) Apply the power after the CPU module and the A/T module are set to the following conditions.. Set the key switch of the CPU module to STOP.. Set the operation mode selection switch of the A/T module to SET. 2) Select the numbers of the analog timers (T00 tot15) whose timer time will be adjusted by the timer number selection switch. [Example] When selecting the analog timer T03 Set the timer number selection switch to 3 REMARK If set the timer number selection switch of the G4F AT3A to 8 to F, nothing will be processed. 3) Set the adjustment volume to the timer time, which will be used as a goal, within the timer time range set in the selection 3.4.1. Short Long Adjustment Volume 4) Set the operation mode selection switch to TEST and check the time from turning-on of the timer operation indication LED to turn-on of the timer contact indication LED. 5) After checking the on time of the timer contact indication LED, set the operation mode selection switch to SET. 6) To micro-adjust the timer time to the goal time, repeat 3) to 5). 7) Set the timer time for each analog timer as the procedure shown by 2) to 6). 8) After every timer time for every analog timer has been set, Set the operation mode selection switch to RUN and execute the user program. 9) To backup the timer time set, set the operation mode selection switch to TEST. Then, the setting time will be stored to the memory. REMARK If an analog timer has been adjusted during the RUN state of the CPU module, the analog timer starts its operation by the prior one of the start signals by the operation mode selection switch of the A/T module and by the user program. 3-8
Chapter 4. INSTALLATION Chapter 4. INSTALLATION 4.1 Installation 4.1.1 Installation Ambience This module has high reliability regardless of its installation ambience. But be sure to check the following for system in higher reliability and stability. 1) Ambience Requirements Avoid installing this module in locations, which are subjected or exposed to: - Water leakage and dust a large amount of dust, powder and other conductive power, oil mist, salt, of organic solvent exists. - Mechanical vibrations of impacts are transmitted directly to the module body. - Direct sunlight. - Dew condensation due to sudden temperature change. - High or low temperatures (outside the range of 0-55) 2) Installing and Wiring - During wiring or other work, do not allow any wire scraps to enter into it. - Install it on locations that are convenient for operation. - Make sure that it is not located near high voltage equipment on the same panel. - Make sure that the distance from the walls of duct and external equipment be 50 mm or more. - Be sure to be grounded to locations that have good noise immunity. 4.1.2 Handling Precautions From unpacking to installation, be sure to check the following: 1) Do not drop it off, and make sure that strong impacts should not be applied. 2) Do not dismount printed circuit boards from the case. It can cause malfunctions. 3) During wiring, be sure to check any foreign matter like wire scraps should not enter into the upper side of the PLC, and in the event that foreign matter entered into it, always eliminate it. 4-1
Chapter 5. PROGRAMMING Chapter 5. PROGRAMMING 5.1 Function Block 5.1.1 Timer Starting (G3F-AT4A : AT4TON, G4F-AT3A: AT3TON) Function block I/O Variable Data type Descriptions G3F-AT4A G4F-AT3A I O IN BASE SLOT TMR Q STAT BOOL USINT USINT USINT BOOL USINT Request area for function block execution - Used to request an execution of the operating function block. - Used to set the starting condition for the function block. [Level ( ) or edge ( ) ] Base location No. - Used to write the base No. on which the A/T module is mounted. - Setting range : GM1 series(0 to 31)., GM2 series (0 to 7), GM3/4 series (0 to 3) Slot location No. - Used to write the slot No. on which the A/T module is loaded. - Setting range : 0 to 7 Used timer specification area - Use to specify the used timers. - Setting range : AT4TON(0 to 15), AT3TON(0 to 7) Function block finished execution state - If the operating function block has finished its operations without error after the input variable IN was turned on, 1 is output to this variable. The 1 is retained until the 0 is input to the variable IN. Then, 0 will be output to this variable and operation stops. Error status indication area - If an error occurs during ex ecution of the operating function block, the error code will be output to this variable. - For error contents, refer to Section 7.1. 5-1
Chapter 5. PROGRAMMING 5.2 Program for Comparing and Outputting the Setting Times of Analog Timers. 5.2.1 System Configuration Slot 0 Slot 1 GM4- GM4- G4F- G4Q- PA1A CPUA AT3A RY2A 5.2.2 Initial Settings 1) Time setting range : 0.1 to 1.0 sec 2) Used timer : T00 5.2.3 Program Description 1 2 T00 (Set the switch to OFF) (Set the switch to OFF) The setting times can be adjusted by the adjustment volume of the A/T module without changes of the program even in the RUN state of the PLC CPU. (1) The starting contact _T10S of the timer T00 repeats off and on with 10 sec cycle. (2) When the _T10S turns on, the timer T00 starts its operation. Q0 turns on after the setting time has passed. (3) When the Q0 turns on, if the setting time is more than 980 msec, the MAX_TIME, the %QX0.1.0 is set to ON. If less than 900 msec, the MIN_TIME, the %QX0.1.1 is set to ON. <Timing Chart> _T10S 5 sec 5 sec Q0 Setting time 5-2
Chapter 5. PROGRAMMING 5.2.4 Program 10 sec cycle start contact (A 10 sec timer is used to operate the T00) (Setting time of the analog timer T00) 5-3
Chapter 6. GK PROGRAMMING Chapter 6. GK PROGRAMMING 6.1 I/O Signals The followings explain the I/O signals for the A/T module used in the MASTER-K series. The G3F-AT4A occupies 32 I/O points and the G4F-AT3A occupies 16 I/O points. 6.1.1 G3F-AT4A ( N means the I/O Word No. of the A/T module) Input Signal Contents Output Signal Contents P(N)0 Contact of the analog timer T00 P(N+1)0 Coil of the analog timer T00 P(N)1 Contact of the analog timer T01 P(N+1)1 Coil of the analog timer T01 P(N)2 Contact of the analog timer T02 P(N+1)2 Coil of the analog timer T02 P(N)3 Contact of the analog timer T03 P(N+1)3 Coil of the analog timer T03 P(N)4 Contact of the analog timer T04 P(N+1)4 Coil of the analog timer T04 P(N)5 Contact of the analog timer T05 P(N+1)5 Coil of the analog timer T05 P(N)6 Contact of the analog timer T06 P(N+1)6 Coil of the analog timer T06 P(N)7 Contact of the analog timer T07 P(N+1)7 Coil of the analog timer T07 P(N)8 Contact of the analog timer T08 P(N+1)8 Coil of the analog timer T08 P(N)9 Contact of the analog timer T09 P(N+1)9 Coil of the analog timer T09 P(N)A Contact of the analog timer T10 P(N+1)A Coil of the analog timer T10 P(N)B Contact of the analog timer T11 P(N+1)B Coil of the analog timer T11 P(N)C Contact of the analog timer T12 P(N+1)C Coil of the analog timer T12 P(N)D Contact of the analog timer T13 P(N+1)D Coil of the analog timer T13 P(N)E Contact of the analog timer T14 P(N+1)E Coil of the analog timer T14 P(N)F Contact of the analog timer T15 P(N+1)F Coil of the analog timer T15 6-1
Chapter 6. GK PROGRAMMING 6.1.2 G4F-AT3A ( N means the I/O Word No. of the A/T module) Input Signal Contents Output Signal Contents P(N)0 Contact of the analog timer T00 P(N)8 Coil of the analog timer T00 P(N)1 Contact of the analog timer T01 P(N)9 Coil of the analog timer T01 P(N)2 Contact of the analog timer T02 P(N)A Coil of the analog timer T02 P(N)3 Contact of the analog timer T03 P(N)B Coil of the analog timer T03 P(N)4 Contact of the analog timer T04 P(N)C Coil of the analog timer T04 P(N)5 Contact of the anal og timer T05 P(N)D Coil of the analog timer T05 P(N)6 Contact of the analog timer T06 P(N)E Coil of the analog timer T06 P(N)7 Contact of the analog timer T07 P(N)F Coil of the analog timer T07 6.1.3 Example for Executing the Analog Timer T00 by Program. (The A/T Module is mounted onto the Slot 0) Analog timer T00 execution command P0000 P0010 P0040 ( ) The inside of the G3F-AT4A Setting time : 1 sec T00 Contact of T00 1) If the output P0010 is turned On, the coil of the analog timer T00 turns On and it starts its operation. 2) After one second from the turning-on of the output P0010, the contact of the analog timer T00 will turns On and the input contact turns On. 6-2
Chapter 6. GK PROGRAMMING 6.2 Program for Comparing and Outputting the Setting Times of Analog Timers. 6.2.1 System Configuration Slot 0 Slot 1 GM4- PA1A K4P- 15AS G4F- AT3A G4Q - TR2A 6.2.2 Initial Settings 1) Time setting range : 0.1 to 1.0 sec 2) Used timer : T00 1 2 T00 (Set the switch to OFF) (Set the switch to OFF) 6.2.3 Program Description The setting times can be adjusted by the adjustment volume of the A/T module without changes of the program even in the RUN state of the CPU Module. (1) The coil of the timer T00 turns off and on with 10 sec cycle. (P0008) (2) When the F0095 turns on, the CPU Module timer T200 starts its operation. When the signal of contact P0000 turns on after setting time, the current time of the T200 is stored to the D0000. (3) If the T200 is more than 980 msec the P0010 is set to On. If less, the P0011 is set to On. (4) If the T200 is set to On, the M0021 will be reset in order that the T200 starts a new operation. <Timing Chart> F0095 5 sec 5 sec P0008 P0000 Setting time 6-3
Chapter 6. GK PROGRAMMING 6.2.4 Program 10 sec cycle start contact The M0020 is turned on for 1 scan Turning on the operation signal of the T00 Turning on the operation signal of the T00 (A 10 sec timer is used to operate the T00) T00 junction signal The 1.5 sec timer T200 is used to operate the T00 The M030 is turned on for 1 scan Storing the T00 setting time to the D0000 < If the setting time is more than 980 ms, the P0010 is set to ON Turning the operation junction T00 Off. Resetting the M0021 so that the T00 start a new operation 6-4
Chapter 7. TROUBLESHOOTING Chapter 7. TROUBLESHOOTING The followings explain errors and corrective action when operating the A/T module. For the problems relating to the CPU module, refer to the CPU module User s Manual. 7.1 Error Code Errors in the function block when using the A/T module in the GM series are given below. Error code Error Content 0 Normal operation 1 Base location No. outside the setting range(0 to 3) 2 Base hardware defect 3 Slot location No. outside the setting range(0 to 7) 4 The corresponding slot has no mounted module. 5 Other module than the A/T module is mounted. 6 Timer No. outside the setting range (G3F-AT4A: 0 to 15, G4F-AT3A : 0 to 7) 7 The module is not in the READY state. 10 The module is in the TEST mode. 7-1
Chapter 7. TROUBLESHOOTING 7.2 Troubleshooting Procedure 7.2.1 RUN LED off RUN LED off. No Yes The A/T module is correctly mounted on the base board. Mount correctly the A/T module on the base board. No Yes The capacity of the power supply module is sufficient. Re-examine system configuration with calculating the current consumption of each module. The RUN LED is turned on after the A/T module has been replaced and the CPU module has been reset.. Yes No A/T module hardware defect. Contact the service station. Yes No The RUN LED is turned on after the CPU module has been replaced and reset. CPU module hardware defect. Contact the service station. Base board hardware defect. Contact the service station. 7-2
Chapter 7. TROUBLESHOOTING 7.2.2 The Contact Indication LED for the Timer Operation does not Turn on When the Timer Starts its Operation. The contact indication LED for the timer operation does not turn on when the timer starts its operation. RUN LED of AT module is turned on. No Yes See Section 7.2.1 The selection switch for operation mode is set to RUN. No Yes The RUN LED is turned on after the CPU module has been replaced and reset. Yes No Set the selection switch of the operation mode to RUN. A/T module hardware defect. Contact the service station. CPU module hardware defect. Contact the service station. 7-3
Chapter 7. TROUBLESHOOTING 7.2.3 The Operation Junction does not Turn on Though the Setting Time has Passed after the Start of the Timer ] The operation junction does not turn on though the setting time has passed after the start of the timer The operation mode selection switch of the A/T module is set to RUN. No Yes Incorrect setting of the operation mode selection switch. Refer to Section 3.4.2 and correctly set the switch. The setting value is within the setting range. No Yes The junction LED of the A/T module is turned ON. Yes No The setting value is outside the setting range. Refer to Section 3.4.1 and correctly set the setting value. CPU module defect. Contact the nearest service station. The junction LED is turned ON, after the A/T module has been replaced and the CPU module has been reset.. Yes No A/T module hardware defect. Contact the nearest service station. The junction LED is turned ON, after the CPU module has been replaced and reset. Yes No CPU module hardware defect. Contact the nearest service station. Base unit hardware defect. Contact the nearest service station. 7-4
Chapter 8. TEST RUN Chapter 8. TEST RUN 8.1 Run Procedure The following shows the run procedure for the A/T module. Start Set the timer range by the selection switch. (See Section 3.4.1) Mount the A/T module onto the base unit. Apply the power to the A/T module. (See Section 3.4.2) Set the operation mode switch to SET. Adjust the timer number selection switch. Set the time by the adjustment volume. Set the selection switch for operation mode to RUN. Down-load the analog timer operating program on the CPU module. Operation 8-1
Chapter 9. DIMENSIONS Chapter 9. DIMENSIONS 9.1 Dimensions 8.1.1 9.1.1 G3F-AT4A Unit : mm G3F-AT4A 9-1
Chapter 9. DIMENSIONS 9.1.2 G4F-AT3A G4F-AT3A 9-2
SAFETY PRECAUTIONS Be sure to read carefully the safety precautions given in data sheet and user s manual before operating the module and follow them. The precautions explained here only apply to the G3F-AT4A and G4F-AT3A. For safety precautions on the PLC system, see the GLOFA GM3/4 User s Manuals or the MASTER-K 1000S/300S User s Manuals. A precaution is given with a hazard alert triangular symbol to call your attention, and precautions are represented as follows according to the degree of hazard.! WARNING I If not provided with proper prevention, it can cause death or fatal injury or considerable loss of property.! CAUTION I If not properly observed, it can cause a hazard situation to result in severe or slight injury or a loss of property. However, a precaution followed with! CAUTION can also result in serious conditions. Both of two symbols indicate that an important content is mentioned, therefore, be sure to observe it. Keep this manual handy for your quick reference in necessary.
Installation Precautions! CAUTION Operate the PLC in the environment conditions given in the general specifications. If operated in other environment not specified in the general specifications, it can cause an electric shock, a fire, malfunction or damage or degradation of the module Make sure the module fixing projections is inserted into the module fixing hole and fixed. Improper installation of the module can cause malfunction, disorder or falling. Test Run and Maintenance Precautions! CAUTION Do not separate the module from the printed circuit board(pcb), or do not remodel the module. They can cause disorder, malfunction, damage of the module or a fire. When mounting or dismounting the module, perform them after the power has been turned off. Do not perform works while the power is applied, which can cause disorder or malfunction. Waste Disposal Precautions! CAUTION When disposing the module, do it as an industrial waste.