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Rexroth IndraDrive
13.7 Chronological Sequence when Switching ON and OFF
When Switching On
Control voltage
ON
Bb1 contact
closes
Power
ON
Internal
test routine
DC bus
loading
Mains contactor
ON
UD contact
closes
DOK-INDRV*-HMV-*******-PR01-EN-P
t1
t2
t3
t1:
5,2 s;
time for internal booting until Bb1 contact closes
t2:
time can be set by the user
t3:
400 ms;
time for internal test routine before loading the DC bus
t4:
time depends on DC bus capacitance (internal, external) and supply
voltage. The approximate time can be calculated:
t4 = 0,7 x U
Mains
t5:
500 ms;
delay time until mains contactor closes
t6:
max. 200 ms;
depends on device (ON delay of mains contactor)
Fig. 13-14: Chronological sequence when powering unit up
t4
t5
hmv_einschalt_verlauf.fh7
x C
DC bus
13-15
Appendix
t6
t
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