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Rockwell Automation Publication 440R-UM013F-EN-P - July 2021
Chapter 11 Troubleshooting
Check the PowerFlex Drive Connections
Confirm that voltage is present at the relay terminals and the safety input
terminals of the PowerFlex drive.
shows an example of the
measurement points for one output channel (terminal 34). Repeat the checking
on the second channel (terminal 44). The terminal connections from 34 and 44
to S1 and S2 can be reversed.
Figure 79 - Typical Connections to PowerFlex Drive
shows the test connections to verify the common
reference between the DIS safety relay and the AC Drive. Remove power from
the application and set the digital multimeter to ohms. If possible, measure
directly at the terminals. The resistance must be less than 1 ohm.
Step
Description
1
The voltage at 14 must be slightly less than the supply voltage. If not, then the DIS safety relay must be
replaced.
2
The voltage at A1 must be slightly less than the supply voltage and must be the same voltage as
measured at terminal 14. If not, check for an open circuit (broken wire) between terminal 14 and A1.
3
The voltage at A2 must be zero. If not, check for an open circuit between A1 and the voltage supply
ground connection. If A2 measures zero volts and A1 measures the supply voltage, then K1 is not
operating properly, and must be replaced.
Step
Description
1
The voltage at 34 must be slightly less than the supply voltage. If not, then the DIS safety relay must be
replaced.
2
The voltage at S2 must be slightly less than the supply voltage and must be the same as the voltage at
terminal 34. If not, check for an open circuit (broken wire) between terminal 34 and S2.
3
The voltage at terminal 4 must be zero. If not, check for an open circuit between terminal 4 and the
voltage supply ground connection.
shows how to verify the continuity from
terminal 4 of the drive to terminal A2 of the DIS safety relay.
SHOCK HAZARD:
Turn power OFF before continuity is tested.
34 44 14 24
S2
4
S1
A1
A2
23
Volts
DMM
1
2
3
OUT
24V common
24V DC supply
PowerFlex 525
AC Drive
Motor
Содержание 440R-D22R2
Страница 12: ...12 Rockwell Automation Publication 440R UM013F EN P July 2021 Chapter 1 Overview Notes...
Страница 16: ...16 Rockwell Automation Publication 440R UM013F EN P July 2021 Chapter 2 Installation Notes...
Страница 81: ...Rockwell Automation Publication 440R UM013F EN P July 2021 81 Appendix A Specifications Notes...
Страница 82: ...82 Rockwell Automation Publication 440R UM013F EN P July 2021 Appendix A Specifications...
Страница 89: ...Rockwell Automation Publication 440R UM013F EN P July 2021 89 Guardmaster Safety Relays User Manual...