Controller functions
Version 1
RES-409
Page 51
This connection (at terminals 15+16) is necessary for high primary currents (continuous current > 5A, pulsed
current > 25A). The switching amplifier should be wired as described in section 8.7 "Wiring diagram with booster
connection (MOD 26)" on page 21.
10.14 Undervoltage detection (as of February 2007)
Trouble-free operation of the temperature controller is guaranteed within the line voltage tolerance range specified
in section 6 "Technical data" on page 11.
If the line voltage drops below the lower limit of the permissible range, the controller is switched to standby mode.
This is also indicated in the controller status, bit no. 14 (
section 10.4.1 "Controller status" on page 39).
Normal operation is automatically resumed when the input voltage returns to the specified tolerance range.
Standby mode is indicated by 0…3°C (corresponds to approx. 0V) at the analog output.
Trouble-free operation of the controller is only guaranteed within the specified input voltage
tolerance range. An external voltage monitor must be connected to prevent defective heatseals as
a result of low line voltage.
10.15 System monitoring / fault output
To increase operating reliability and prevent faulty heatsealing, the controller incorporates special hardware and
software features that facilitate selective fault messages and diagnosis. Both the external wiring and the internal
system are monitored.
These features crucially support the system owner in localizing the cause of an abnormal operating state.
System faults are reported or differentiated by means of the following elements.
A.)
Red "FAULT" LED on the controller lights up with three states:
1.
Blinks fast (4Hz)
The "AUTOCAL" function must be run (error codes 8+9; as of February 2007 also: 104…106, 211, 302, 303).
2.
Blinks slowly (1Hz)
The system configuration is incorrect and the zero calibration (AUTOCAL function) was therefore unsuccessful
(
section 9.2 "Controller configuration" on page 22). This corresponds to error codes 10…12 (as of
February 2007 also: 111…114).
1.
Lit continuously:
This indicates a fault that prevents the controller from being started up (error codes 1…7; as of February 2007
also: 101…103, 107, 108, 201…203, 307, 308, 801, 9xx).
Also in instances 1 and 2 if a "START" command is simultaneously sent.
As a rule, this refers to an external wiring fault.
B.)
Fault relay (relay contact terminals 12+13+14):
The fault relay is set in the factory as follows:
•
NOT ACTIVE
in operating states A.1 and A.2, but active if a "START" signal is activated in one of these states.
•
ACTIVE
in operating state A.3.
If the fault relay is configured differently from the factory setting (
section 9.2.3 "Configuration of the fault relay"
on page 24), these states are inverted.
C.)
Error code output by means of the CAN
protocol
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