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External I/O Circuits
Pin No.
Symbol
23
SO2+
24
SO2−
25
SO3+
26
SO3−
Shell
FG
Control Output Circuit
Note
3-3-6
SMARTSTEP Junior Servo Drive I/O Signals (R7D-ZN@-ML2 with
Built-in MECHATROLINK-II Communications)
Terminal Arrangement of Control I/O Connector (CN1)
2
DEC
Origin prox-
imity input
4
POT
Forward
drive inhibit
input
6
STOP
Emergency
stop input
Note
Name
General-purpose
These control input signals are not used with the
output
standard settings.
Frame ground
Use this terminal to connect the cable's shield and
FG wire.
Servo Drive
To other output circuit
+
X
Di
See note.
−
The circuit is equipped with an auto-resetting circuit breaker to protect the out-
put. Even if an overcurrent trips the breaker, the breaker will reset automati-
cally after a certain time elapses with no current.
This section describes the standard I/O signals used with a Position Control
Unit when using a SMARTSTEP Junior Servo Drive with Built-in MECHA-
TROLINK-II Communications.
Refer also to the SMARTSTEP Junior Servo Drive with MECHATROLINK-II
Communications User's Manual (Cat. No. I554).
The default control I/O signal allocations for a SMARTSTEP Junior Servo
Drive with MECHATROLINK-II Communications are set to the standard Servo
Drive settings for using MECHATROLINK. The default pin arrangement of the
control I/O connector (CN1) on the Servo Drive are shown below.
Only the I/O signals that are connected to the Position Control Unit are shown.
Refer to 6-4 Standard Settings for Servo Drives Using MECHATROLINK for
the standard Servo Drive settings for using MECHATROLINK.
1
EXT1
External
latch signal
1 input
3
NOT
Reverse
drive inhibit
input
+24 VDC
5
+24VIN
control
power sup-
ply input
7
0GND
Output
ground
common
(1) Do not connect unused pins.
Function/Interface
External power
supply
24 ± 1 VDC
Di: Diode providing surge-voltage protection (Use a high-speed diode.)
9
---
---
11 ---
---
13 BKIR
Brake inter-
lock output
Section 3-3
Control mode
All modes
All modes
Voltage: 30 VDC max.
Output current: 50 mA max.
8
---
---
10 ---
---
12 ALM
Alarm output
14 ---
---
53
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