7
Operation and Service
WEXA/WEX speed monitor
Operating Instructions – Explosion-Proof VARIMOT
®
Variable Speed Gear Units and Accessories
39
7.3
WEXA/WEX speed monitor
Problem
Possible cause
Solution
Voltage encoder is
not functioning
Voltage encoder is not properly
connected
Check voltage supply of voltage encoder
using the evaluation electronics
With correct voltage supply:
•
Consult manufacturer's documentation
•
Voltage encoder is not suitable for
connection to the evaluation electronics
(IGEX version)
•
Replace voltage encoder
LED on voltage
encoder or speed
monitor is not lit or
is lit constantly
Switching interval is too long or
too short
Set switching interval (see Sec. "Startup",
Changing the switching interval)
No display
•
Display unit is not properly
connected
•
Voltage supply is missing or
interrupted
•
Connect display unit correctly according
to wiring diagram
•
Check voltage supply according to
wiring diagram
Incorrect display
Display unit is not properly
adjusted
Check settings
