Technical information

47
Installation
Inputs and outputs require an external voltage source for operation. This voltage source must
be in the range of 10.5 to 30 VDC. The negative (-) lead of the external power supply must
be connected to the enclosure or safety ground.
If inductive loads such as DC relay coils are connected to the outputs, a suppression diode
must be installed in parallel with the load coil with its cathode towards the positive end of the
external supply.
Failure to follow safe installation guidelines can cause death or serious injury. You are
responsible for limiting the output current to less than 200 mA.
Figure 34: Input/Output Connections
FX-AMP
COMMAND
SERIAL 1A
SERIAL 1B
INPUTS
OUTPUTS
1
2
3
4
5
6
7
8
9
10
11
12
LED INDICATORS
TERMINAL CONNECTIONS
(TWO PER I/O LINE #)
+
-
EXTERNAL SUPPLY
(10.5 TO 30 VDC)
EXAMPLE B: SINKING OUTPUT
+
-
EXTERNAL SUPPLY
(10.5 TO 30 VDC)
EXAMPLE A: SOURCING OUTPUT
EXTERNAL SUPPLY
(10.5 TO 30 VDC)
EXAMPLE B: SINKING INPUT
EXTERNAL SUPPLY
(10.5 TO 30 VDC)
EXAMPLE A: SOURCING INPUT
+
-
EXTERNAL SUPPLY
(10.5 TO 30 VDC)
EXAMPLE C: SINKING OUTPUT
WITH INDUCTIVE LOAD
+
-
+
-
INPUT SWITCH
INPUT SWITCH
LOAD
LOAD
DIODE SUPPRESSOR