3 Installation
3.6 Electrical Installation
114
DA1 Variable Frequency Drives
08/18 MN04020005Z-EN
www.eaton.com
3.6.2.3 STO terminals
Figure 81: STO control signal terminals (direct enable)
Without the connection of a power supply (24 V DC) to control signal
terminals 12 and 13, the control section and the inverter will remain blocked.
An
Inhibt
(Inhibit = block) message is displayed.
3.6.2.4 Connection example
The control cables should be screened and twisted. The screen is applied on
one side in the proximity of the variable frequency drive (PES).
Figure 82: 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)!
1 2 3 4 5 6 7 8 9 10 11 12 13
5
6
12
13
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 unbraiding, i.e. by pushing the
separate plastic covering over the end of the screen or by
pushing a rubber grommet on the end of the screen.
