Quantum Series 140 MPM 204 00sc
58
Active LED Does Not IlluminateActive LED Does Not Illuminate
Active LED Does Not IlluminateActive LED Does Not Illuminate
Active LED Does Not Illuminate
Possible CausesPossible Causes
Possible CausesPossible Causes
Possible Causes
The module is not communicating with the PLC rack.
CorrCorr
CorrCorr
Corr
ective ective
ective ective
ective
ActionAction
ActionAction
Action
1.1.
1.1.
1. Deinstall the module. See chapter 2, “Installation and Wiring.”
2.2.
2.2.
2. Place the rack in run mode.
3.3.
3.3.
3. Reinstall the module in the rack. See chapter 2, “Installation and Wiring.”
Fault LED Does Not IlluminateFault LED Does Not Illuminate
Fault LED Does Not IlluminateFault LED Does Not Illuminate
Fault LED Does Not Illuminate
Possible CausesPossible Causes
Possible CausesPossible Causes
Possible Causes
• Module self-test error
• Fatal hardware error
CorrCorr
CorrCorr
Corr
ective ective
ective ective
ective
ActionAction
ActionAction
Action
Contact your local distributor.
Fault LED Blinking RedFault LED Blinking Red
Fault LED Blinking RedFault LED Blinking Red
Fault LED Blinking Red
Possible CausesPossible Causes
Possible CausesPossible Causes
Possible Causes
Type of self-test error. Possible codes are indicated in the Diagnostic LEDs section of chapter 1, “Overview.”
CorrCorr
CorrCorr
Corr
ective ective
ective ective
ective
ActionAction
ActionAction
Action
Verify module configuration information.
No Signal IndicationNo Signal Indication
No Signal IndicationNo Signal Indication
No Signal Indication
There is no indication of a signal in the input register count rate word. If status bit 3x+1 - 3x+8 (Bit 14)
(counter input state) is high and status bit 4 (rate zero) is high.
Possible CausesPossible Causes
Possible CausesPossible Causes
Possible Causes
If you have an open collector output or a relay or contact type output, you might require a 1 to10 kohm pull-
up / pull-down resistor.
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