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84
Output module
Symptom
Possible cause
Action
No outputs on an output module
will turn On.
No external input power
Supply power
Low external input voltage
Supply rated load power
Loose terminal screw or defective
contact
Tighten the screw and reconnect
the module
Defective I/O connector contacts
Replace the output module
Defective output circuit
Reconnect the output module
No outputs on an output module
will turn Off.
Defective output circuit
Replace the output module
One or more inputs on an I/O
module will not change to On state
(LED is illuminated).
Output time too short
Correct the program
Defective output circuit
Replace the output module
One or more inputs on an I/O
module will not change to On state
(LED is not illuminated).
Incorrect output load
Replace the output load
Short output wiring
Reconnect the output wiring
Loose terminal screw or defective
contact
Tighten screw and reconnect the
module
Defective output contact
Replace the output module or relay
Defective output circuit
Replace the output module
One or more outputs on an I/O
module will not change to On state
(LED is illuminated).
Defective output circuit
Replace the output module or relay
Error caused by leak or residual
current
Replace the external load
One or more outputs on an I/O
module will not turn Off (LED is not
illuminated).
Defective output circuit
Replace the output module
Output changes On/Off state
erratically.
Low external input voltage
Supply rated load power
Noise error
Countermeasure against noise
Loose terminal screw or defective
contact
Tighten the screw and reconnect
the module
A set of 8 points on an I/O module
operate incorrectly or identically.
Loose common terminal screw
Tighten the screw and reconnect
the module
Defective terminal connector
Tighten the screw and reconnect
the module
CPU module error
Replace the CPU module
Output display LED is not
illuminated.
LED error
Replace the output module
Summary of Contents for Samsung NX-CPU700p
Page 1: ...NX700 Series Controller NX CPU700p User Manual ...
Page 78: ...78 Power check flow chart ...
Page 79: ...79 Run check flow chart ...
Page 80: ...80 Error check flow chart ...
Page 82: ...82 External environment check flow chart ...
Page 86: ...86 ...
Page 98: ...98 ...
Page 102: ...102 Decimal Bin Hex BCD Gray Code Cross reference Table ...
Page 104: ...104 ...
Page 121: ......