gefran AGL50-EV Series

28 AGL50-EV
7.2 Lift Sequence
Timing diagrams of the lift sequence are reported in Fig. 7.2 and Fig. 7.3.
I.000 Enable
I.001 Run Fwd
XOR
I.002 Run Rev
I.003 ... I.006
Freq Sel 1...4
10
D.007 Actual
speed
(Motor speed)
D.002 Output
current
(Inverter)
[51] Run
contactor
(*)
[45] DC-
braking
(Motor)
(*)
[55] Lift
start (*)
(*): See 7.2.1
1 2 3 4 5 6 7
[54] Brake
contactor
(*)
Fig. 7.2 – Standard lift sequence
1. S.250 Cont close delay (Default : 0,20)
2. S.251 Magnet time (Default : 1)
3. S.252 Brake open delay (Default : 0,20)
4. S.253 Smooth start dly (Default : 0)
5. S.254 DCBrake stp time (Default : 1)
6. S.255 Brake close dly (Default : 0,20)
7. S.256 Cont open delay (Default : 0,20)
Note:
Lift sequence will not start if there is no current owing on any of the motor windings during the initial injection
of DC-current. The minimum amount of current necessary to release the mechanical brake and initiate the lift
sequence is dened by A.087 Current pres thr. By setting the parameter to “0”, current check is disabled,
and the lift sequence will start even if the motor is disconnected from the drive.