3 Installation
3.6 Electrical Installation
106 DA1 Variable Frequency Drives 11/16 MN04020005Z-EN www.eaton.com
3.6.2.3 STO terminals
Figure 75:STO control signal terminals (direct enable)
If a control voltage (24 VDC) is not connected to control signal terminals 12
and 13, the control section and the inverter will remain disabled.
"InHibit" will be displayed.
3.6.2.4 Connection example
The control cables should be screened and twisted. The screening is applied
on one side in the proximity of the variable frequency drive (PES).
Figure 76:Simple connection example
→
Control signal terminal 12 (STO+) must always be connected to
+24 V and control signal terminal 13 (STO-) must always be
connected to 0 V (reference point for +24 V)!
5 61213
7
1 2
3
+10 V AI1
0 V STO+ STO-
+24 V DI1
DI2
PE
PES
PES
M
4K7
R1
M
FWD REV
ZB4-102-KS1
15 mm
(0.59”)
M4
Cu 2.5 mm
2
12 13
⚠
STO+ STO-
Motor Stop
STOP
OFF
1
2
3
≦ 25 m (≦ 82 ft)
→
Prevent the shielding from becoming unbraided, i.e. by
pushing
the
separated
plastic covering over the end of the shielding or
with a rubber grommet on the end of the shielding.