gefran SIEIDrive LIFT AGy -L, Instruction Manual, Page: 73 / 242

Eng
lish
AGy -L 73
7.2 Lift Sequence
Timing diagrams of the lift sequence are reported in Fig. 7.2 and Fig. 7.3.
I.000 Enable src
I.001 Run Fwd
src
XOR
I.002 Run Rev
src
I.003 ... I.006
Freq Sel 1...4
src
1 0
d.007 Output
speed
(Motor speed)
d.002 Output
current
(Inverter)
[51] Contactor
(*)
[45]
(Motor)
DC braking
(*)
[55] Lift start (*)
(*): See 7.2.1
1 2 3 4 5 6 7
[54] Brake cont
(*)
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 flowing 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 defined 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.