Hardware manual

22
STAC5 Hardware manual
920-0026 Rev. C
9/4/2014
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inside drive
8
7
6
5
4
DB-25 Connector
COM
IN3
IN4
IN5
IN6
Single Ended Digital Inputs
The -Q and -IP drives include four single ended, optically isolated input circuits
that can be used with sourcing or sinking signals, 12 to 24 volts. This allows
connection to PLCs, sensors, relays and mechanical switches. Because the
input circuits are isolated, they require a source of power. If you are connecting
to a PLC, you should be able to get power from the PLC power supply. If you
are using relays or mechanical switches, you will need a 12-24 V power supply.
This also applies if you are connecting the inputs to the programmable outputs
of an Si product from Applied Motion.
What is COM?
“Common” is an electronics term for an electrical connection to a common voltage. Sometimes “common” means the same
thing as “ground”, but not always. In the case of the STAC5 drives, if you are using sourcing (PNP) input signals, then you
will want to connect COM to ground (power supply -). If you are using sinking (NPN) signals, then COM must connect to
power supply +.
Note: If current is flowing into or out of an input, the logic state of that input is low or closed. If no current is flowing, or the
input is not connected, the logic state is high or open.
The diagrams on the following pages show how to connect the inputs to various commonly used devices.
Connecting an Input to a Switch or Relay
IN/OUT2
switch or relay
(closed=logic low)
IN3..IN6
INCOM
12-24
VDC
Power
Supply
-
+
Connecting another drive to the STAC5
(When output closes, input goes low).
IN/OUT2
IN3..IN6
INCOM
Another Drive
OUT+
OUT–
12-24
VDC
Power
Supply
-
+