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5.18
Motor contactors (optional)
The STO connection must be bridged if motor contactors are used (see
fi
g.).
X-STO
+24V_
STO
GND
STO_A
STO_B
GND_
STO
(6)
(5)
(4)
(3)
(2)
(1)
STO connection bridged
The monitor of the STO function must also be deactivated.
The STO function is activated/deactivated in the
Monitors/STO
menu.
Monitors
|
-
"
STO
Off
|
-
"
Off
STO monitor
The maximum cable length to the motor contactors for non-shielded lines is
200 mm
. Shielded lines
must be used if there is a greater distance between the contactors and the ZAdynpro.
X3
V
W
M
3~
V
W
U
P1
P2
U
R2 R1
R4 R3
K1
3 4
1 2
K2
3 4
1 2
1
Synchronous motor connection
1
Bridges can be omitted for asynchronous motors
Information
If an emergency evacuation is carried out by opening the brakes, the motor windings should be short-
circuited for the evacuation to prevent an uncontrolled acceleration of the elevator. The short-circuit
generates a speed-dependent braking torque, suf
fi
cient in most cases to reduce the elevator speed to
a safe level.
CAUTION!
If operating with synchronous motors from other manufacturers, you have to ensure that a manually
emergency evacuation is approved.
Original operating instructions
ZAdynpro
–
Part 1
Electrical installation
R-TBA17_01-GB 1837 Index 004
Part.-No. 00163459-GB
30/64