Error - Cause - Error Correction - Bender ISOMETER iso415R Manual

6 Error – Cause – Error correction
Error pattern
RS-485
Unstable system Missing termination due to incorrect
commissioning or defective component.
No device is terminated.
Faulty termination due to incorrect
configuration or defective component.
Only one or more than two devices are
terminated.
Missing bias resistors in the master device
No communication Incorrect configuration: different baud
rates between bus devices.
Incorrect connection: terminals A and B
are mixed up.
Alarm relays
Relays do not energise No alarm message due to defective com-
ponent or defective controlling devices.
No alarm source has been assigned.
Relays do not de-en- No alarm reset due to sticking or defective
ergise relay. Switching current > 5 A.
No switching of the relay due to excessive
preloads on contacts.
Enclosure
Broken screw-mount- Device becomes detached due to broken
ing brackets mounting brackets.
Non-compliance Insufficient insulation due to insufficient
with the insulation distance between mounting screws and
guideline connecting wires.
Terminals
Wires detach from the Due to splicing of wire ends, it is not
terminal possible to insert them into the terminal
or hold them firmly in the terminal.
Wires cannot be re- Ferrules with strong crimp impressions
moved from terminal get stuck in the terminal
Cause
Configure the terminating resistor, determine
the terminating resistor value and replace it if
necessary.
Configure the terminating resistor, check quality
of the bus signal.
Installation and configuration of the missing
bias resistors.
Calibrate baud rates between all bus devices.
Establish correct bus wiring.
Check relay for proper function,
replace device if necessary.
Assign alarm sources.
Replace device, if necessary. Observe technical
data of the switching output.
Observe technical data of the switching output.
Preventive measure: Use correct screw type and
observe max. tightening torque.
If the screw-mounting brackets are defective:
mount on DIN rail or replace device.
Use screws with plastic cover or mount on DIN
rail.
Use ferrules for mounting and connection to
flexible cables.
Use correct crimping pliers for mounting and
connection with flexible cables.
Correction
iso415R-x_D00401_00_M_XXEN / 04.2021
ISOMETER® iso415R
Source
27