6
AC servo systems
I/O specifications
Terminals specifications (for all drives)
I/O signals (CN1) - Input signals (for MECHATROLINK-II servo drives)
I/O signals (CN1) - output signals
(for MECHATROLINK-II servo drives)
Symbol
Name
Function
L1
Main power supply input terminal
AC power input terminals for the main circuit
Note: for single-phase servo drives connect the power supply input to L1 and L3.
L2
L3
L1C
Control power supply input terminal
AC power input terminals for the control circuit
(for 200V single/three-phase servo drives only).
L2C
24 V
DC power input terminals for the control circuit
(for 400V three-phase servo drives only).
0 V
B1
External regeneration resistor connection terminals Servo drives below 750W: no internal resistor is connected. Leave B2 and B3 open.
Connect an external regenerative resistor between B1 and B2.
Servo drives from 750W to 5 kW: short-circuit in B2 and B3 for internal regenerative resistor. If the
internal regenerative resistor is insufficient, connect an external regenerative resistor between B1 and
B2 and remove the wire between B2 and B3.
B2
B3
U
Servo motor connection terminals
Terminals for outputs to the servomotor.
V
W
Pin No.
Signal name
Function
6
I-COM
± pole of external DC power. The power must use 12V-24V (±5%)
5
E-STOP
Emergency stop
The signal name shows the factory setting. The function can be
changed by parameter setting.
7
P-OT
Forward run prohibited
8
N-OT
Reverse run prohibited
9
DEC
Origin proximity
10
EXT3
External latch input 3
11
EXT2
External latch input 2
12
EXT1
External latch input 1
13
SI-MON0
General purpose monitor input 0
14
BTP-I
Connecting pin for the absolute encoder backup battery. Do not connect when a battery is connected to the encoder cable (CN2
connector).
15
BTN-I
17
-
Terminals not used. Do not connect.
18
-
19
-
20
-
21
-
22
-
23
-
24
-
-
PCL
Forward torque limit
The function of input signals allocated to pins 5 and 7 to 13 can be changed with these options by
parameters settings.
NCL
Reverse torque limit
SI-MON1
General-purpose monitor input 1
SI-MON2
General-purpose monitor input 2
Shell
FG
Shield ground. Connected to frame ground if the shield wire of the I/O signal cable is connected to the connector shell.
16
GND
Signal ground. It is insulated with power supply (I-COM) for the control signal in the servo drive.
Pin No.
Signal name
Function
1
BRK-OFF+
External brake release signal
2
BRK-OFF
25
S-RDY+
Servo ready: ON when there is no servo alarm and control/main circuit power supply is ON
26
S-RDY-
3
ALM+
Servo alarm: Turns OFF when an error is detected
4
ALM-
-
INP1
Position complete output 1
The function of output signals allocated to pins 1,2, 25 and 26 can be changed with these options by
parameters settings
AT-SPEED
Speed complete
T_LIM
Torque limit
ZSP
Zero speed
V-COIN
Speed coincidence
INP2
Position complete output 2
WARN1
Warning 1
WARN2
Warning 2
DEN
Origin proximity
V_LIM
Speed limit
