Johnson Controls Metasys MS-IOM4711 Series Installation Instructions Manual page 12

Table 3: IOM47 Terminal Blocks, Functions, Ratings, Requirements, and Cables
Terminal Block Terminal
Label Label
UNIVERSAL +15 V
(Inputs)
INn
ICOMn
BINARY INn
(Inputs)
ICOMn
IOM47 Input/Output Module Installation Instructions
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
Note: A current loop fail-safe jumper can be positioned to
maintain a closed 4 to 20 mA current loop, even when the
power to the controller is interrupted or off. See
Loop Jumpers.
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.
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 18 V. 3k ohm pull up
Binary Input - Pulse Counter/Accumulator Mode
0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 18 V. 3k ohm pull up
Binary Input Common for all Binary Input (IN) terminals
Note: All Binary ICOMn terminals share a common, which
is isolated from all other commons, except the Configurable
Output (CO) common (OCOMn) when the CO is defined
as an Analog Output.
Determine Wire Size and
Maximum Cable Length
Same as (Universal) INn
Note: Use 3-wire cable for
devices that source power from
the +15V terminal.
See Guideline A in
See Guideline B in
UI Current
See Guideline A in
See Guideline A in
Same as (Universal) INn
See Guideline A in
1
Table 4.
Table 4.
Table 4.
Table 4.
Table 4.
12