VLT
®
Series 3500
74
★ = ROM default setting. ✔ = Normal Danfoss setup. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
313 Motor Check (MOTOR CHEC)
Value:
★ Off (OFF) [0]
On (ON) [1]
Function:
VLT 3500 Series is able to check whether a motor has been
connected.
Description of choice:
If
On
[1] has been selected, the control checks that a motor
is connected when there is 24 V on terminal 27 and no start
command has been given. If no motor is detected, NO MO-
TOR is displayed.
This function is not available in VLT 3575 - 3800 Series and
208/230 volt VLT 3542 - 3562 Series.
314 Motor Preheat (MOTOR PRE)
Value:
★ Off (OFF) [0]
On (ON) [1]
Function:
The preheat function can be activated to lower the humidity
level in the motor.
Description of choice:
If
On
[1] has been selected, the motor is preheated by
means of direct current (approximately half the start volt-
age) when there is 24 V on terminal 27 and no start com-
mand has been given.
This function is not available in VLT 3575 - 3800 Series and
208/230 volt VLT 3542 - 3562 Series.
310 Trip Delay at Current Limit (TRIP DLY@C)
Value:
0 to 60 secs. or OFF (61) ★ OFF
✔ sec
Function:
When the drive goes into current limit, as set by parameter
209, this timer determines how long the drive will run in cur-
rent limit before it fault trips. This is provided to prevent
damaging a stalled or heavily overloaded motor.
Description of choice:
Select how long the drive is going to be able to run at the
current limit, I
LIM
, before tripping. OFF will allow the drive to
run in current limit indefinitely.
311 Trip Delay at Inverter Fault (TRIP DLY@F)
Value:
0 to 35 secs. ★ Depends on unit
✔ sec
Function:
This setting determine how long the drive will continue to
run after an overvoltage or undervoltage condition is de-
tected.
Description of choice:
Select how long the drive is to be able to run at over- or
undervoltage before tripping.
312 Maximum Automatic Restart Time (AUTO RESTA)
Value:
0 to 10 secs. ★ 5 secs.
Function:
If auto reset has been selected in parameter 309, the time
delay before each reset attempt can be set.
Description of choice:
The time between tripping and automatic reset is selected.
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