BENSHAW RSi GM2 Series - Inverter Pre-Overheat Warning

Learning Protection Features
GM2 Series VFD
175
890054-00-00
Inverter pre-overheat warning
The inverter provides overheat protection and will trip on an “Over Heat” fault (OHt) when the heat
sink temperature exceeds 90°C. Either Relay1 or Relay2 (OU.31 or OU.33) can be set to 12 (Over
Heat) to provide an output signal.
The inverter can also provide a warning (OH) when the heat sink temperature exceeds the
temperature set in Pr.77 (overheat warning temperature). The inverter responds to an overheat
warning based on the setting of Pr.78 (overheat warning operation). Either Relay1 or Relay2
(OU.31 or OU.33) can be set to 41 (Pre Overheat) to provide an output signal.
Group
Code
Name
Setting
Setting Range
Unit
Pr
77
Pre-overheat warning
temperature
90
10–110
℃
78
Pre-overheat warning
operation setting
0: None
0
None
-
1
Warning
2
Free-Run
3
Dec
OU
31, 33
Multi-function (digital)
relay1 item
Multi-function (digital)
relay2 item
41: Pre Over
Heat
0–44
-
Pre-overheat Warning Operation Setting Details
Code and
Features
Description
Pr.77 Pre-
overheat warning
temperature
Set the pre-overheat warning temperature.
Setting Range: 10–110[]
Pr.78 Pre-
overheat warning
operation setting
0: None → No pre-overheat warning operation
1: Warning → If the pre-overheat warning temperature is exceeded,
warning message is displayed on the keypad and inverter will operate
normally.
2: Free-Run → If the pre-overheat warning temperature is exceeded, a
pre-overheat fault occurs and the motor will coast to a stop.
3: Dec → If the pre-overheat warning temperature is exceeded, a pre-
overheat fault occurs and the motor will decelerate to a stop.
OU.31, OU.33
multi-function
(digital) relay1, 2
41: Pre-overheat warning → Relay will activate when a pre-overheat
warning or trip occurs.