Function library
Monitorings
9.3.3 Monitoring functions
9-237
L
EDSVS9332S-D11 EN 3.0
9.3.3.15 Heatsink monitoring OH4 (adjustable)
Purpose
Controller protection
This monitoring is designed as a warning before the final disconnection of the controller via the
OH-TRIP.
Thus, the process can be influenced to avoid a final disconnection of the controller at an inconvenient
time.
For example, fans which would cause an inacceptable noise in continuous operation, can also be
triggered.
MONIT
TEMP--COOLER
MONIT--OH4
C0061
C0122
Fig. 9-183 Heatsink monitoring OH4 with adjustable threshold
Signal
Source Note
Name Type DIS DIS format CFG List Lenze
TEMP-COOLER - C0061 dec - - - cannot be reassigned
MONIT-OH4 d - - - - - -
Function
The signal OH4 is derived from a comparator with hysteresis.The threshold can be set under code
C0122. The hysteresis is fixed and amounts to 5 K. The signal is thus reset below a threshold of 5 K.
Features:
z LECOM no.: 2054
z Reaction: WARNING or OFF
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