Spectrum Controls 140 EHC 204 00sc - Manual (Page 63)

Quantum Series 140 EHC 204 00sc 140 EHC 208 00sc
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Active LED Does Not Illuminate
Possible Causes
The module is not communicating with the PLC rack.
Corrective Action
1. Deinstall the module. See chapter 2, “Installation and Wiring.”
2. Place the rack in run mode.
3. Reinstall the module in the rack. See chapter 2, “Installation and Wiring.”
Fault LED Does Not Illuminate
Possible Causes
•
Module self-test error
•
Fatal hardware error
Corrective Action
Contact your local distributor.
Fault LED Blinking Red
Possible Causes
Type of self-test error. Possible codes are indicated in the Diagnostic LEDs section of chapter 1, “Overview.”
Corrective Action
Verify module configuration information.
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 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.