Function "Safe Torque Off (STO)" of the ZAdyn4C
The motor contactors are replaced by the STO function in the ZAdyn4C. Therefore both STO relays
must be installed in the control (see
fi
gure).
See the chapter "Safe Torque Off (STO) function" in the ZAdyn4C operating instructions for further
information about the "Safe Torque Off (STO)" function.
(1)
STO_B
(2)
STO_A
GND_
STO
(4)
(3)
+24V_
STO
GND
(6)
(5)
N
L
X-STO
K2
K1
1
2
3
O51
O54
(9)
(10)
24V I1
X-OUT
STO-Info
24V*
A*
B*
ZAdyn4C
1)
Principle circuit diagram "Safe Torque Off (STO)" function
1
Safety circuit
2
Modulation
3
Protected routing or design with two separate jacketed cables (see chapter "STO interface (X-STO)")
4
Digital inputs control
*
Wire designation of the pre-assembled connecting lead L-SL-xx-HX-ZA4-STO
1)
Information only, not safety-related
Connect the digital output O51/O54 (STO-Info) of the ZAdyn4C to the motor contactor monitor of the
control.
The digital output O51/O54 of the ZAdyn4C must be con
fi
gured in the
Control
menu to
STO_Info
.
Control
|
-
"
f_O5
STO_Info
|
-
"
STO_Info
Function O5
X-STO connection
Connect via the connection terminal X-STO.
X-STO
+24V_
STO
GND
STO_A
STO_B
GND_
STO
(6)
(5)
(4)
(3)
(2)
(1)
K1
K2
1
Connection with internal 24 V voltage and protected routing
1
Modulation
X-STO
+24V_
STO
GND
STO_A
STO_B
GND_
STO
(6)
(5)
(4)
(3)
(2)
(1)
K1
K2
1
24V*
A*
B*
Connection with internal 24 V voltage using two separate
jacketed cables
1
Modulation
*
Wire designation of the pre-assembled connecting lead
L-SL-xx-HX-ZA4-STO
Technische Information
R-TIA14_12-GB 1528
Part.-No.
15/22
