Protective Equipment; Thermal Overload Protection - Heidolph RZR 2102 control Betriebsanleitung

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5. Protective equipment

5.1 Overload LED
The stirrer features and extra overload LED (6) that will light in an overload situation. To get higher
torque out of the item, overload operation is acceptable for a short period of time. After extended over-
load operation, a built-in thermal circuit breaker will disconnect the item automatically.
the overload LED (6) must not light during continuous operation; the item will be cut-off au-
tomatically after a short time!

5.2. Thermal overload protection

The stirrer features built-in overheat protection. If the item is getting too hot, either by overload (refer to
5.1) or high ambient temperatures, it will be disconnected automatically. The following error prompt ap-
pears in the display (5):
Allow item to cool-off. As soon as temperature drops to an acceptable level, display (5) will read:
Hitting the ON/OFF key (2), the item will return to normal operation, running at speed set.
5.3. Mechanical overload protection
In case of an overload situation including excessive torque (refer to torque graph under "Specifications"),
or by stuck stirrer shaft, the stirrer is going to disconnect automatically.
Display (5) reads:
After 90 seconds, display (5) reads:
When having fixed the problem, hit ON/OFF key (2) for re-start. Item will return to normal operation, run-
ning at speed set.
2
6
XXX rpm/off
OV-Temp!
XXX rpm/off
Mot-Err!
XXX rpm/off
OV-Temp!
XXX rpm/off
Mot-ERR!
2
6
5
24
2
6
5
5