Nc And Drive Unit Connection - Mitsubishi MELDAS MDS-C1 Instruction Manual

2-3 NC and drive unit connection

The NC bus cables are connected from the NC to each drive unit so that they run in a straight line from
the NC to the terminal connector (battery unit). And up to 7 axes can be connected per system. (Note
that the number of connected axes is limited by the CNC. The following drawing shows an example with
4 axes connected.)
< Connection >
CN1A : CN1B connector on NC or previous stage's drive unit
CN1B : CN1A connector on next stage's drive unit or terminal connector (battery unit)
CN4 : Connector for communication between power supply unit (master side) and drive unit
Connected
to the NC
Refer to the
instruction manual
of each NC for
details.
CN1A
SH21 cable
CN1A/CN1B
Pin No.
No.1 No.11
No.10 No.20
Name Name
1 GND 11 GND
2 RD 12 RD*
3 AL 13 AL
4 SD 14 SD*
5 GND 15 GND
6 GFO 16 GFO
7 EMG 17 EMG*
8 18
9 BAT 19
10 P5(+5V) 20 P5(+5V)
CAUTION
POINT
2. Wiring and Connection
MDS-C1-V2- MDS-C1-V1-
1st/2nd axis
CN1B CN1A
Max. length of 30m from the NC to terminal connector or battery unit.
Wire the SH21 cable between the NC and drive unit so that the distance
between the NC and terminal connector (battery unit) is within 30m.
Axis Nos. are determined by the rotary switch for setting the axis No. (Refer to
section "4-1-1 Setting the rotary switch".) The axis No. has no relation to the
order for connecting to the NC.
MDS-C1-SP-
3rd axis 4th axis (final axis)
CN1B CN1A
2 - 8
MDS-C1-CV-
Connect to the
battery unit with a
terminal connector or
SH21 cable.
CN1B
CN4
CN4