Rockwell-automation 193-EC4 EC4 Current Monitoring Relay User Manual User Manual Page 116
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Rockwell Automation Publication 193-UM011A-EN-P - September 2010 117
Troubleshooting Chapter 11
➊ FRN 2.000 and later.
Table 26 - Input and Output Troubleshooting Procedures
Failure
Typ e
Failure Description Corrective Action
Input
1...4
Input 1,2,3 or 4 does not
appear to recognize a
contact closure
1. Check the supply voltage on the DeviceNet connector.
2. If the applicable contact closes but the EC4 Current Monitoring Relay Input does not recognize the closure, check
the continuity and wiring to the connected contact.
3. Check the IN 1,2,3 and 4 status LEDs. If the appropriate LED does not illuminate, measure the voltage across and
current through the applicable input. Verify they are within the ratings of the EC4 Current Monitoring Relay (See
Appendix A).
4. If the appropriate Input LED does illuminate, but the input status is not reported properly over the DeviceNet
network, check the programmable controller ladder logic and I/O mapping.
Input 1 Trip reset operation 1. Check the programming of Parameter 77, IN1=Trip Reset
➊
Trip
Relay
The trip relay does not
appear to be functioning
properly
1. Check the TRIP/WARN and NETWORK STATUS LEDs, or the DEVICE STATUS and TRIP STATUS parameters. If a
Protection Fault exists, refer to the Trip and Warning troubleshooting procedure. If a DeviceNet-related fault
exists, refer to the DeviceNet troubleshooting procedure.
2. Press the Test/Reset button on the EC4 Current Monitoring Relay. The trip relay should open and the TRIP/WARN
LED should exhibit a single red flash code. Remove the control circuit power and measure the impedance across
terminals 95 and 96 to verify the trip relay contacts are open. Press the Test/Reset button again. The unit should
reset and the trip relay contacts should close. Measure across terminals 95 and 96 to ensure the trip relay
contacts closed.
3. Remove control circuit supply power and check the control wiring to the EC4 Current Monitoring Relay Trip Relay
(95/96).
Note: The E3 Trip Relay contacts will not close until 2.35 seconds after power is applied to the EC4 Current
Monitoring Relay DeviceNet connector. If a “Non-Volatile Fault” previously existed or a fault condition is present
during power-up, the trip relay contacts will not close until the fault condition is removed and the trip is reset.
OUT A
or OUT B
Output A or Output B
does not appear to turn
on (close) when
commanded to do so
1. Check the supply voltage on the DeviceNet connector.
2. Check the OUTA and OUTB status LEDs. If the appropriate LED does not illuminate, check the programmable
controller ladder logic and I/O mapping.
3. If the appropriate Output LED is illuminated, remove the control circuit power and check for continuity across the
appropriate output terminals (13/14 for OUTA, 23/24 for OUTB). If the continuity test indicates the output is open,
replace the EC4 Current Monitoring Relay. Check the supply voltage against the ratings of the contactor and the
relay output before installing a new unit.
4. Remove control circuit power and check the control circuit fuse and the control wiring to the EC4 Current
Monitoring Relay output terminals.
5. Check the control circuit power supply. Verify the voltage is within the contactor and current monitoring relay
ratings.
6. Check the TRIP/WARN and NETWORK STATUS LEDs, or the DEVICE STATUS and TRIP STATUS parameters. If a
Protection Fault exists, refer to the Trip and Warning troubleshooting procedure. If a DeviceNet-related fault
exists, refer to the DeviceNet troubleshooting procedure.
7. Check the OUTA and OUTB Pr FltState, Pr FltValue, Dn FltState, Dn FltValue, Dn IdlState, and Dn IdlValue
programmable parameters. The Pr FltState and Pr Flt Value parameters supersede the Dn Flt or Dn Idle
parameters.
OUT A
or OUT B
Output A or Output B
does not appear to turn
off (open) when
commanded to do so.
1. Check the OUTA and OUTB status LED’s. If the appropriate LED remains illuminated, check the programmable
controller ladder logic and I/O mapping.
2. If the appropriate Output LED is not illuminated, remove the control circuit power and check for continuity across
the appropriate output terminals (13/14 for OUTA, 23/24 for OUTB). If the continuity test indicates the output is
closed, replace the EC4 Current Monitoring Relay. Check the supply voltage against the ratings of the contactor
and the relay output before installing a new unit.
3. Remove control circuit power and check the control circuit fuse and the control wiring to the EC4 Current
Monitoring Relay output terminals.
4. Check the OUTA and OUTB Pr FltState, Pr FltValue, Dn FltState, Dn FltValue, Dn IdlState, and Dn IdlValue
programmable parameters. Then check the TRIP/WARN and NETWORK STATUS LEDs, or the DEVICE STATUS
and TRIP STATUS parameters. If a Protection Fault exists, refer to the Trip and Warning troubleshooting
procedure. If a DeviceNet-related fault exists, refer to the DeviceNet troubleshooting procedure.
OUT A
or OUT B
The contactor
connected to Output A
or Output B appears to
“chatter”
1. Verify the OUT A or OUT B LED remains in the appropriate On or Off state. If the LED is flickering, check the
programmable controller’s ladder logic program.
2. Check the control circuit supply voltage. Verify it is within the ratings of the contactor coil and the current
monitoring relay’s outputs.
3. Remove the control circuit power. Verify all control wiring is properly secured.
- EC4 Current Monitoring Relay 1
- Important User Information 2
- IMPORTANT 3
- DNET-UM072_-EN-P 4
- Table of Contents 5
- Product Overview 10
- Diagnostic Parameters 12
- Trip Relay 12
- Inputs and Outputs 12
- Status Indication 13
- Test/Reset Button 13
- Node Address Switches 14
- DeviceNet Compatibility 14
- Flash Memory 14
- Installation and Wiring 15
- Starter Installation 16
- Starter Assembly Instructions 17
- 193-EC_ _E) 18
- Cat. No. 193-EC_ _B) 20
- Cat. No. 193-EC_ _E) 21
- Power Terminals 22
- Terminal Designations 23
- Grounding 24
- Short-Circuit Ratings 24
- Fuse Coordination 25
- Typical Motor Connections 25
- Single-Phase Full-Voltage 26
- External Line Current 27
- Transformer Application 27
- Installation Instructions 28
- External Ground Fault 29
- Sensor Application 29
- E3 Plus Overload Relay 30
- Cat. No. 193-CBCT_ 30
- Ground Fault Sensor 30
- Cat. No. 193-CBCT1 31
- Typical Control Circuit 32
- Wiring Diagrams 32
- Single-Phase 33
- Three-Phase 33
- Warning Enable 35
- Overcurrent Protection 35
- Introduction 35
- Trip Enable 35
- Overcurrent Warning 36
- Overcurrent Trip 36
- Ground Fault Protection 37
- Ground Fault Setting Range 38
- Ground Fault Trip 38
- Ground Fault Trip Inhibit 39
- Ground Fault Warning 39
- Undercurrent Protection 40
- Undercurrent Trip 41
- Communication Fault 42
- Protection 42
- Communication Idle 43
- Comm Idle Warning 44
- Remote Trip 44
- Preventive Maintenance 45
- Diagnostics 45
- Queue Clearing 46
- DeviceNet Node Commissioning 47
- Using RSNetWorx for DeviceNet 48
- Figure 26 - EDS Wizard Screen 50
- Programmable Parameters 57
- Monitor Params (All 58
- Read-Only) 58
- Advanced Setup Group 60
- For Catalog Number 193-EC4ZZ 66
- Reset/Lock Group 71
- DeviceNet Setup Group 72
- Output Setup Group 75
- DeviceLogix Group 79
- Current Monitoring Parameters 81
- Reporting Accuracy 82
- Ground Fault Current 83
- Reporting 83
- Monitor Group 83
- Trip History and Snapshot 90
- Trip History Codes 92
- Warning History Codes 93
- Trip Snapshot 94
- Explicit Messaging 96
- (0x0375) 102
- Using DeviceLogix™ 104
- DeviceLogix Programming 105
- Troubleshooting 110
- Network Status LED 111
- OUT A & OUT B LEDs 111
- DeviceNet Modes of 112
- Operation 112
- Power-Up Sequence 112
- Run Mode 113
- Recoverable Error Mode 113
- Unrecoverable Error Mode 113
- Resetting a Trip 114
- Trip/Warn LED 114
- Procedures 114
- DeviceNet Troubleshooting 115
- Input and Output 115
- ➊ FRN 2.000 and later 116
- Specifications 117
- Table 4 - Input Ratings 118
- Environmental 119
- Table 9 - Protection 120
- DeviceNet Information 122
- Identity Object – Class 123
- Code 0x01 123
- Message Router – Class 124
- Code 0x02 124
- DeviceNet Object – Class 124
- Code 0x03 124
- Assembly Object – Class 125
- Code 0x04 125
- Input Assemblies 126
- Connection Object – Class 128
- Code 0x05 128
- Discrete Input Point Object 132
- – Class Code 0x08 132
- Discrete Output Point 132
- Object – Class Code 0x09 132
- Parameter Object – Class 133
- Code 0x0F 133
- Parameter Group Object – 135
- Class Code 0x10 135
- Control Supervisor Object – 139
- Class Code 0x29 139
- Acknowledge Handler 142
- Object – 0x2B 142
- DeviceNet Interface Object 143
- – Class Code 0xB4 143
- ODVA Fault Codes 144
- Logic Supervisor Object 145
- CLASS CODE 0x030E 145
- Status Object - CLASS 145
- CODE 0x0375 145
- CE Compliance 148
- Low Voltage Directive 149
- Two-Speed Applications 150
- Accessories 151
- Rockwell Automation Support 157
- Documentation Feedback 157
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