4B - W4005 BÜHLER ELEVATOR MONITORING SYSTEM R9.6 – 22 May 2020
Page 40 of 48
13. Troubleshooting Guide
• Check that power is applied to the unit on terminals 25-28
• Check that the main input fuse F6 is not damaged
• Check that the internal circuitry fuse F5 is not damaged
Alarm / Stop LED is blinking, but no
Alarm present
• Unit is not calibrated or waiting for calibration. Please refer to 10.14
for the instruction on how to calibrate the unit. W4005NV46CAI /B
controller MUST be calibrated before it can be used
There is no power to the sensors
• Check that the field power fuses (F1 and F2) are not damaged
• Check the field wiring to make sure +24VDC supply is delivered to
the sensors
• Replace the faulty fuses and sensors as necessary
• Check if the sensor is in a state of alarm and clear it
• Check if the sensor is powered correctly (+24VDC)
• Replace the faulty sensor if needed
Bearing Temperature Sensor Alarm
always present
• Make sure that switches 3 and 4 within SW2 are set correctly. Refer
to section 10.13.2 - DIP Switches (SW2) for more information
• Make sure that the bearings are not faulty and have been greased
correctly
• Replace faulty temperature sensors as necessary
Immediate Stop/Shutdown after
calibration
• Check that there are no misalignment alarms
• Check that the speed sensor is detecting speed (i.e. the output LED
on the sensor is blinking when the shaft is rotating
• Check that the motor contactor is wired exactly as shown in this
manual
Elevator is not stopping when alarm is
present
• Check that the motor started wiring is correct according to the
drawings specified in this manual in Figure 14.
Table 28 - W4005V46AI-SYSx Troubleshooting Guide
To Next Page
Loading...
Need help?
General
