Alarm Intervention - gefran BUy-1020 Manuel D'utilisation

L01
Thermal
relay
K0
L00
EMERGENGY-OFF

3.5. Alarm Intervention

On an internal alarm (*), the braking unit is immediately disabled, the AL red LED lights up
and the OK relay contact opens (terminals X3-75/ X3-76).
When the alarm cause has been removed, it is possible to restore the braking unit with one
of the following procedures:
- via the S3 button
- via a remote command on the X2-1 and X2-4 terminals.
- stopping and afterwards restoring the inverter power supply
(*) Intervention of the thermal contact on the heatsink or of the IGBT protection circuit or
of the power supply circuit.
Figure 3.4.2: Auxiliary control circuits
K0
S11
OFF
S12
STOP
S2 K2T
ON/START
K2
ON/OFF
START/STOP
—————— Braking Unit ——————
80
G1
OK
82
K2
K1M
K2T
T = 1s
K1M
K2
Mains contactor
50-GB