Controller functions
Page 52
RES-408
Version 1
A fault is preventing the controller from being started up (error codes 101…103, 107, 108, 201…203,
307…310, 801, 9xx).
Also in instances 1 and 2 if the "START" signal is activated simultaneously.
As a rule, this refers to an external wiring fault.
C.)
Alarm relay (relay contact terminals
12, 13, 14):
The alarm relay is set in the factory as follows:
•
DE-ENERGIZED
in operating states B.1 and B.2, but energized if a "START" signal is activated in one of these
states.
•
ENERGIZED
in operating state B.3.
If the alarm relay is configured differently from the factory setting (
section 10.2.3 "Configuration of the alarm
relay" on page 26), these states are inverted.
D.)
Controllers manufactured as of June 2006:
Error code appears at the 0 to 10VDC
actual value output (terminals 17+18):
Since the temperature no longer needs to be indicated if a fault occurs, the actual value output is used to display
error codes in the event of an alarm.
13 voltage levels are offered for this purpose in the 0…10VDC range, each of which is assigned an error code
(
section 11.21 "Error messages" on page 52).
If a state that requires "AUTOCAL" occurs – or if the controller configuration is incorrect – (error codes 104…106,
111…114, 211, 302, 303), the actual value output jumps back and forth at 1Hz between the voltage value that
corresponds to this error and the end of the scale (10VDC, i.e 300°C or 500°C). If the "START" signal is activated
in one of these states, the voltage value does not change any more.
An alarm can only be reset by pressing the "RESET" key or by switching the controller off and then
on again. The alarm is not reset until the key is released.
Invalid error messages may appear when the controller is switched off owing to the undefined oper-
ating state. This must be taken into account when they are evaluated by the higher-level controller
(e.g. a PLC) in order to avoid false alarms.
11.21 Error messages
The table below shows how the analog voltage values that appear at the actual value output are assigned to the
faults that have occurred. It also describes each fault and the required corrective action. The error messages are
!
HOLD
PREHEAT
SEALHEAT
ENTER
HAND
RESET
ROPEX
T-408
!