MH860 series hydraulic servo drive
Electrical connection
29
Signal name
Symbol
Pin
Function
Servo rea
Servo readiness -
S-RDY+
S-RDY-
CN5-15
CN5-16
If the main circuit is powered on without alarm
output, the drive is on when the drive enabling end
is at low level.
Alarm
Alarm output -
ALM+
ALM-
CN5-17
CN5-18
The effective state (normally open or normally
closed) is switched through SW7. If an exception
is detected, the output signal state is reversed.
Max. output voltage: DC30V. Max. output current:
DC50mA
Control power
input for digital
signal
+24V
CN5-19
User-su24V power. Valid voltage range:
+8V
– +25V Note: For details how to switch to an
external power supply, see section 4.5.
Digital signal
ground
GND24V
CN5-20
Digital signal ground terminal Note: For details
how to switch to an external power supply, see
section 4.5.
Motor temperature
sensor 1
T1
CN5-21
The motor temperature sensor terminals (T1, T2)
do not distinguish the positive or negative pole.
The drive supports the motor temperature sensors
(or resistors) of the KTY84 and PT1000 types. You
can change the motor temperature sensor type
through the LED panel or HMI. Then the hardware
circuit automatically selects the corresponding
temperature sensor detection circuit.
Motor temperature
sensor 2
T2
CN5-22
4.7.2 I/O output signal connector (CN1A)
Signal name
Symbol
Pin
Function
Digital output 1
O1+
O1-
CN1A-1
CN1A-2
Wobble-disk output signal (used with the
dual-displacement pump wobble-disk control
function)
On for small flow, while off for heavy flow.
Relay output contact capacity: 3A/250VAC,
1A/30VDC
Digital output 2
O2+
O2-
CN1A-3
CN1A-4
Oil pressure reaching output: It is on when the
feedback pressure reaches a certain
percentage of the given pressure. This
percentage can be set.
Optocoupler output. Max. voltage: DC30V.
Max. current: DC50mA
