• Inputs/outputs with cables less than 30 m (100 ft) typically do not require an offset in the
software setup. Cable runs over 30 m (100 ft) may require an offset in the input/output software
setup.
I/O Terminal blocks, ratings, and requirements
Table 3: Terminal blocks, functions, ratings, requirements, and cables
Terminal block
label
Terminal
label
Function, ratings, requirements
Determine wire size
and maximum cable
length
+15 V
15 VDC Power Source
for active (3-wire)
input devices connected to the Universal
IN
n
terminals.
Provides 100 mA total current
Same as (Universal)
IN
n
Note:
Use 3-wire
cable for devices
that source power
from the +15V
terminal.
Analog Input - Voltage Mode (0–10
VDC)
10 VDC maximum input voltage
Internal 75k ohms pull-down
See Guideline
A
in
Analog Input - Current Mode (4–20 mA)
Internal 100 ohms load impedance. See
Note:
A current loop fail-safe jumper
must be in the Enable position to
maintain a closed 4 to 20 mA current
loop. See
See Guideline
B
in
Analog Input - Resistive Mode (60–600k
ohms)
Internal 12 V. 15k ohms pull-up
Qualified Sensors: 0–2k ohms
potentiometer, RTD (1k Nickel [ Johnson
Controls
®
sensor], 1k Platinum, and A99B
Silicon Temperature Sensor) Negative
Temperature Coefficient (NTC) Sensor
See Guideline
A
in
UNIVERSAL
(Inputs)
IN
n
Binary Input - Dry Contact Maintained
Mode
1 second minimum pulse width
Internal 12 V. 15k ohms pull-up
See Guideline
A
in
PCA3613 Advanced Application Programmable Controller Installation Instructions
16
