MR380-1 Series Instruction Manual
Page 16 of 35
4.
Troubleshooting
The following are potential issues and recommended solutions when troubleshooting the MR380
fiber optic emergency stop switch system. For issues not listed, please contact Micronor Sales.
4.1.
Potential Issues & Solutions
If the Instructions do not rectify the problem, then contact Micronor Sales for further assistance.
Function
Symptom
Instructions
‘Power’
Green LED
Not illuminated
when controller
powerd
•
Verify solid electrical connection between wires and screw
terminal for both +24VDC and GND.
•
Verify controller module power supply is +24VDC with a current
output of at least 80mA.
‘Emergency ON’
Red LED
(MR380-1 Only)
Illuminated
when E-Stop not
depressed
•
Check if emergency switch is ‘On’ when depressed. If so, reset
switch and verify ‘Emergency ON’ is now off.
•
Verify optical link cabling is properly connected and
undamaged.
•
Verify that the fiber optic system does not exceed system loss
margin specifications, using either an optical power meter or
OTDR.
•
Clean all fiber optic connector surfaces using appropriate
cleaning materials.
‘Status’
Red LED
(MR380-2 Only)
Not illuminated
when NO
Microswitch
down or NC
Microswitch up
•
Verify optical link cabling is properly connected and
undamaged.
•
Verify that the entire fiber optic system does not exceed system
loss margin specifications, using either an optical power meter
or OTDR.
•
Clean all fiber optic connector surfaces using appropriate
cleaning materials.
+5V and +24V
Digital Outputs
No high voltage
output
•
Verify solid electrical connection between wires and screw
terminal for Digital Out and GND.
•
Verify that the controller module is properly powered with
+24VDC and grounded.
•
Verify emergency switch is connected and 'Emergency ON’ is
off.
Relay
Switching failure
•
Verify solid electrical connection between wires and screw
terminal for NO2,NC2, CM2, NO1,NC2,CM1
•
Verify that the controller module is properly powered with
+24VDC and grounded.
•
Verify emergency switch is connected and “Emergency ON’ is
off
•
Verify when switch is depressed, the controller will electro-
mechanically switch the state of the relay resulting in a faint
‘click’ sound.
Damaged
Sensor
E-Stop, E-
Actuator or
Microswitch
•
Verify controller module outputs optical power by connecting
LC loopback directly from one LC connector to the other, shown
