User Manual

HE
35
8. Safety installations, warning functions
Check the safety installations at least twice a year! Refer to ( page 21)
SECVAL
(Security Values)
 SAFETMP
 AL-TYPE
 OVERTMP
 SUBTEMP
Settings for the excess temperature protection > SAFETMP<
and for the warning functions for high > OVERTMP< and low >
SUBTEMP< temperature are made in a menu which is called up by
pressing the key
.
Menu item > AL-TYPE< allows choosing between a warning and
an alarm cut-off for the menu items > OVERTMP< and > SUBTEMP<.
8.1. Excess temperature protection
Warning:
The excess temperature protection must be set at least 25 °C below the fire point of
the bath fluid used!
In case of wrong setting there is a fire hazard!
We disclaim all liability for damage caused by wrong settings!
This excess temperature protection is independent of the control circuit.
When activated heater and circulating pump are completely shut down.
The alarm is indicated by optical and audible signals (continuous tone)
and the error message "ALARM-CODE 14" appears on the VFD
COMFORT-DISPLAY together with the ticker:
> EXCESS TEMPERATURE PROTECTOR ALARM-CHECK
ADJUSTMENT <
Setting range: 20 °C ... 320 °C
 Rough setting can be effected by using the temperature scale.
Exact setting:
1. Press the key
to display menu >SAFETMP<.
2. Press the
key and the set shutdown value is indicated.
3. Set the new shutdown value within 30 seconds using a screwdriver.
The value is indicated on the VFD COMFORT-DISPLAY
Example: SAFETMP / 100 °C
Recommendation:
Set the excess temper
ature protection at 5 °C to 10 °C above the working
temperature setpoint.