CG Drives & Automation, 01-5980-01r2 Functionality 79
PTC Inputs [2332]
Two additional PTC option inputs can be handled. The
settings are therefore “PB-PTC” for the on-board PTC, “PB-
PTC&Opt1”, and “PB-PTC&Opt1-2”.
Start Limitation [234]
The start limitation could be used to protect the motor by
limiting the numbers of starts per hour or securing a
minimum time delay between starts.
A start limitation alarm can only be reset when the alarm
condition is gone.
The actual time left until the next start is allowed is shown in
the status menu [72G] “Time to Next Start”.
Start Limitation Alarm Action [2341]
Start limitation is enabled in this menu by choosing a proper
alarm action, used as thermal protection for the motor.
Autoreset is available for all start limitation alarms, menu
[2552].
Number of starts per hour [2342]
In this menu the allowed number of starts per hour can be
set. If this number is exceeded, an alarm occurs and the
action chosen in menu [2341] is performed.
The alarm is active until the hour has expired. After reset a
new start is allowed. The first hour is counted directly from
the first start of the motor, whereas the following hour is
counted not directly, but from the moment a new start is
done, i.e. no rolling hour.
Minimum time between starts [2343]
In this menu a minimum time between consecutive starts can
be set. If a new start attempt is made before the minimum
time is expired an alarm will occur and the action chosen in
menu [2341] is performed. It is not possible to reset the
alarm until the chosen minimum time has expired and a new
start is allowed.
Time to next start [2344]
In this menu the time to the next allowed start is shown.
Counts down from set value in menu [2343].
Default: PB-PTC
PB-PTC 0
On-board power board PTC used for
protection, terminal 69 and 70
PB-PTC
&Opt1
1
PB-PTC and PTC input on option B1 used
for protection
PB-PTC
&Opt1-2
2
PB-PTC and PTC input on options B1 and
B2 used for protection
Default: No action
No action 0
For a definition, see Table 23, page 55Hard Trip 1
Warning 4
2332 PTC Inputs
Stp M1: PB-PTC
2341 StartLim AA
Stp No action
Default: 10
Range: 1 - 99
Default: Off
Range: 1 - 60 min
Read only
Unit minutes
Resolution: 1 min
2343 MinTBtwStrt
Stp M1: Off
2344 TimTNxtStrt
Stp M1: min
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