iSS Series Integrated Stepper Servo Hardware Installation Manual
3
HWMN-ISS-R20120411
2. Connectors and Pin Assignment
The iSS57 has three connectors, connector for control signals connections, connector for RS232 communication
connections and connector for power connections.
The control signal inputs include PULSE, DIRECTION and ENABLE and the control signal outputs include PED
(In-position) and ALARM. All the above control signals are integrated into one connector.
Control Signal Connector
Pin
Name
I/O
Description
1
PUL+
I
Pulse Signal: In single pulse (pulse/direction) mode, this input represents pulse signal, active
each rising or falling edge (Set by DIP switch S6); In double pulse mode (software
configurable), this input represents clockwise (CW) pulse, active both at high level and low
level. 2.5-24V when PUL-HIGH, 0-0.5V when PUL-LOW. For reliable response, pulse width
should be longer than 2.5μs for 200K MAX input frequency or 1μs for 500K MAX input
frequency.
2
PUL-
I
3
DIR+
I
Direction Signal: In single-pulse mode, this signal has low/high voltage levels, representing
two directions of motor rotation. In double-pulse mode (software configurable), this signal is
counter-clock (CCW) pulse, active both at high level and low level. For reliable motion
response, DIR signal should be ahead of PUL signal by 5μs at least. 2.5-24V when DIR-HIGH,
0-0.5V when DIR-LOW. The motor direction can also be changed by DIP switch S5. Please
note that rotation direction is also related to motor-driver wiring match. Exchanging the
connection of two wires for a coil to the driver will reverse motion direction.
4
DIR-
I
5
ENA+
I
Enable signal: This signal is used for enabling/disabling the driver. In default, high level (NPN
control signal) for enabling the driver and low level for disabling the driver. Usually left
UNCONNECTED (ENABLED). Please note that the PNP and Differential control signals are
on the contrary, namely Low level for enabling. The active level of ENA signal is software
configurable.
6
ENA-
I
Control Signal Connector
Power Input Connector
RS232 Communication Connector
