Micronor MR380-1-3, Instruction Manual

Page: 13 / 29

MR380-1-3 Instruction Manual
Page 13 of 29
4. Troubleshooting
The following are potential issues and recommended solutions when troubleshooting the MR380-
1-3 fiber optic system. For issues not listed, please contact Micronor Sales.
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
powered
•
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
(Using MR387
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. Measure the output power using a power
meter set at 1300nm. It should read between -8.5dBm to -6.5dBm
when using 62.5/125µm or 50/125µm MM fiber, or between
-9.5dBm to -6.5dBm when using 9/125µm SM fiber.
•
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, NC1, CM1
•
Verify that the controller module is properly powered with
+24VDC and grounded.
•
Verify E-Stop 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 •
Verify controller module outputs optical power by connecting LC
loopback directly from one LC connector to the other, shown in
Figure 9 . ‘Power’ should be illuminated and ‘Emergency ON’
should be OFF.
•
Verify undamaged fiber with visual fault finder.
•
Verify that the switch loss is less than the Optical Insertion Loss
specification of the switch sensor using an optical power meter.
•
Clean fiber optic surfaces on the switch using the appropriate
cleaning materials.