Table of Contents
Advertisement
I/O wiring ratings and requirements
table
Table 2: IOM37 terminal blocks, functions, ratings, requirements, and cables
Terminal
Terminal block label
label
+15 V
UNIVERSAL
INn
(Inputs)
ICOMn
OUT NOn
RELAYn
OCOMn
(Outputs)
OUT NCn
Function, ratings, requirements
15 VDC Power Source for active (3-wire) input devices
connected to the Universal INn terminals.
Provides 100 mA total current
Analog Input - Voltage Mode (0–10 VDC)
10 VDC maximum input voltage
Internal 75k ohm Pull-down
Analog Input - Current Mode (4–20 mA)
Internal 100 ohm load impedance
Analog Input - Resistive Mode (0–600k ohm)
Internal 12 V. 15k ohm pull up
Qualified Sensors: 0-2k ohm potentiometer, RTD (1k Nickel
[ Johnson Controls sensor], 1k Platinum, and A99B Silicon
Temperature Sensor) Negative Temperature Coefficient (NTC)
Sensor (10k Type L, 10k JCI Type II, 2.252k Type II)
Binary Input - Dry Contact Maintained Mode
1 second minimum pulse width
Internal 12 V. 15k ohm pull up
Universal Input Common for all Universal Input terminals
Note: All Universal ICOMn terminals share a common,
which is isolated from all other commons.
Normally Open Contact
Connects OCOM to OUT NO when activated.
UL Listed (-0 model only)
1/4 hp 120 VAC, 1/2 hp 240 VAC
360 VA Pilot Duty at 120/240 VAC (B300)
3 A Non-inductive 24–240 VAC
CE Marking (-2 model only):
6 (4) A N.O. or N.C. only, 240 VAC
Relay Common
Isolated from all other terminal commons, including other
Relay Commons.
Normally Closed Contact
Connects OCOM to OUT NC when activated.
UL Listed(-0 model only)
1/4 hp 120 VAC, 1/2 hp 240 VAC
360 VA Pilot Duty at 120/240 VAC (B300)
3 A Non-inductive 24–240 VAC
CE Marking (-2 model only):
6 (4) A N.O. or N.C. only, 240 VAC
Determine wire size and
maximum cable length
Same as (Universal) INn
See Guideline A in Table 3.
See Guideline B in Table 3.
See Guideline A in Table 3.
See Guideline A in Table 3.
Same as (Universal) INn
The Relay output terminals can
accommodate the following
maximum wire sizes:
Two wires per terminal:
1.0 mm (18 AWG) maximum wire
size
or
One wire per terminal:
2.0 mm (12 AWG) maximum
IOM3711 Input/Output Module Installation Guide
Note: Use 3-wire cable for
devices that source power
from the +15 V terminal.
Note: You must determine
the required wire size
for the high-voltage (>30
V) terminals according
to relay ratings, the
applied load, and the
local, national, or regional
electrical codes.
7
Advertisement
Table of Contents
