R.T.A. s.r.l. – XPETME05 – 11/20
11/29
5 - POWER INPUTS AND OUTPUTS
In this chapter drive power input and output and the necessary power supply for drive working are described.
5.1 - Drive power outputs are the four connections to stepping motor. Drive power inputs can be connected
to the main or to an insulation transformer. All connector C1 terminals are listed in the following
Table 2.
CONNECTOR C1
DESCRIPTION
1
Motor winding terminal B
2
Motor winding terminal B-
3
Motor winding terminal A-
4
Motor winding terminal A
5
SHIELD
6
GROUND
7
Terminal power supply (HV
AC
)
N (Neutral).
8
Terminal power supply (HV
AC
).
L (Line).
Table 2
CONNECTOR C5
DENOMINAZIONE
11
Positive terminal logic supply (LV
DC
24V)
12
Negative terminal logic supply (LV
DC
24V)
Table 3
5.2 -
CAUTION!
Earth terminal screw – Earth terminal screw is in frontal panel inferior part and has to be electrically
connected to earth (PE terminal of the machine in which the drive is installed). The terminal 6 of C1
connector has to be connected to earth too.
Earth terminal screw and terminal 6 of C1 connector are the points of motor-drive system that have to
be connected to earth (PE terminal). No other point at a different potential power circuit has to be
connected to earth. The terminal 5 of C1 connector (SHIELD) is internally connected to terminal 6 of
C1 connector. Other points at the same potential of GND could be connected to earth using the
cautions suggested by classical techniques to obtain a correct location of multiple earth connections.
Shielded cables of motor outputs must be connected to points at the same potential. See connection
schemes of Fig. 7, 13 and 14.
5.3 - The drive is
Protection Class I
, it is necessary to take into account earth connections to ensure
correct protection levels.
