Disturbances, Maintenance, Cleaning; Interferences And Fault Clearance; Possible Errors And Their Clearance - ELGO Electronic Z25 Operating Manual

10 Disturbances, Maintenance, Cleaning

This chapter describes possible causes for disturbances and measures for their removal. In case of increased disturbances, please follow the
measures for fault clearance in chapter 10.1. In case of disturbances that cannot be eliminated by following the advice and the fault clear-
ance measures given here, please contact the manufacturer (see second page).

10.1 Interferences and Fault Clearance

CAUTION!
The device, the connection line and the signal cable must not be installed next to sources of interference that emit
strong inductive or capacitive interference or strong electrostatic fields.
External perturbations can be avoided thorough suitable cable routing.
The screen of the signal output cable should only be connected to the following Z25 circuit on one side. The figure
shows how the shield is connected to the Z25 position indicator to avoid interference.
Signal Cable
The screens should not be grounded on both sides. Signal cables always have to be routed separately from the load
power line. A safety distance of at least 0.5 m has to be kept from inductive and capacitive sources of interference
such as contactors, relays, motors, switching power supplies, clocked controllers etc.!
If interferences occur in spite of all the items stated above being observed, please proceed as follows:
1.
2.
3.
4.
5.

10.2 Possible Errors and their Clearance

The following table shows possible errors and their clearance.
Table 4: Error messages and clearance
Error number Description
„Err 110" Data storage error
„Err 210/220" Sensor error (applies only
with absolute encoders)
„Err 240" Power supply voltage
broke down during oper-
ation
„Err 250" Power supply voltage
broke down at power on
Installation of RC-circuits via contactor coils of AC-contactors (e.g. 0,1 µF / 100 Ω)
Installation of recovery diodes via DC-inductors
Installation of RC-circuits via the different motor phases (in the terminal box of the motor)
Do not connect protective earth and ground
Connect a mains filter ahead of the external power pack
Clearance
Switch the device off and on.
If the error occurs again, return the device for repair.
Switch the device off and on.
If the error occurs again, check the encoder and its wiring. If
unsuccessful, return the device for repair.
Switch the device off and on.
If the error occurs again, check the power source resp. power
pack. If unsuccessful, return the device for repair.
Switch the device off and on.
If the error occurs again, check the power source resp. power
pack. If unsuccessful, return the device for repair.
Disturbances, Maintenance, Cleaning
Shield
- 16 -
Earthing Connection
PE