100
MG.30.A7.02 - VLT
®
is a registered Danfoss trademark
Parameter description
3.. Functions and timers
✮
= Factory setting. Text in ( ) = Display text.
The figures in [ ] are used in bus communication.
311
Trip delay at inverter
fault
(Trip dly@fault)
Value:
0 - 35 sec.
Software version 3.11:
Under voltage fixed
✭
25 sec.
Over voltage
✭
0 sec.
When the frequency converter registers an
over- or under-voltage in the inverter it will
await a final trip. Record for how long you
want the frequency converter to wait
beforetripping out.
Note: If this value is reduced from the
factory setting, the unit may report a fault
at Power on (undervoltage).
✭
Depending
on unit
313
Motor check
(Motor check)
Value:
✭
Off (OFF)
[0]
On (ON)
[1]
If
"on" is selected the presence of a motor
is checked when there is 24 V voltage to
terminal 27 and no start command has
been given (START, START REV. or
JOG). If a motor is not connected, the mes-
sage NO MOTOR is shown. This function
is not found for VLT
®
types 3032-3052, 230
V, and VLT
®
types 3060-3250.
312
Max. auto restart time
(Auto restart t)
Value:
0 - 10 sec.
✭
5 sec.
Sets the max. time allowed for auto restart
before a final trip, if selected in para. 309.
314
Motor pre-heat
(Motor pre-heat)
Value:
✭
Off (OFF)
[0]
On (ON)
[1]
If
"on" is selected the motor will be pre-
heated by a DC current when motor
coasting is permitted (terminal 27 = on)
and no start command has been given
(START, START REV. or JOG). This func-
tion is not found for VLT
®
types 3032-3052,
230 V, and VLT
®
types 3060-3250.
315
Motor thermal
protection
(Motor thermal)
Value:
✭
Off (OFF)
[0]
Warning 1 (warning 1)
[1]
Trip 1 (trip 1)
[2]
Warning 2 (warning 2)
[3]
Trip 2 (trip 2)
[4]
Warning 3 (warning 3)
[5]
Trip 3 (trip 3)
[6]
Warning 4 (warning 4)
[7]
Trip 4 (trip 4)
[8]
The frequency converter calculates
whether the motor temperature exceeds
the permissible limits. The calculation is
based on 1.16 x rated motor current (set
in parameter 107). Four separate calcula-
tions are possible, so that one can be
chosen for each setup or the same
calculation can be used in several
setups. Select
off if you do not want
either warning or trip.
Select
warning only if you want a warning
in the display when the motor is overheating.
You can also program the frequency con-
verter to give a warning signal via the
signal outputs (parameters 407-410).
Select “trip” if trip is required when the motor
is overloaded.
You can also program the frequency con-
verter to give a alarm signal via the signal
outputs (parameters 407-410). See graph
on page 130.
Value:
0.00 - 10.00 sec.
✭
0.00
Value:
0.00 - 10.00 sec.
✭
0.00
The delay timers will influence the switch
in/out delay of the relay associated with ter-
minals 01-02-03.
316
Relay ON-delay
(Relay on delay)
317
Relay OFF-delay
(Relay off dela)
