Johnson Controls IOM2710 Installation Instructions Manual page 6

Table 1: IOM2710 and IOM3710 Controller Wiring List (Part 2 of 2)
Terminal Terminal
1
Labels
Block
Relay OUT NO n
Output
Control
OCOM n
OUT NC n
SA/FC Bus SA/FC Bus
2,3
Port
3 +
SA Bus
-
COM
1 +
FC Bus
-
COM
SHLD
24~ Power Hot
COM
1. The terminal block column displays all the points for the IOM3710 model.
2. The SA Bus and the SA/FC Bus are daisy-chained internally.
3. The SA Bus and FC Bus specifications in this table are for MS/TP bus communications at 38.4k baud. For more
information, refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034).
6 IOM2710 and IOM3710 Input/Output Modules Installation Instructions
Function and Electrical Ratings/Requirements
Normally Open Contact
Connects OCOM to OUT NO when activated.
240 VAC maximum voltage
1/3 hp 125 VAC, 1/2 hp 250 VAC
400 VA Pilot Duty @ 240 VAC
200 VA Pilot Duty @ 120 VAC
3 A Noninductive 24-240 VAC
The relay signal common; isolated from other terminal
commons, including Relay Output terminal commons.
Normally Closed Contact
Connects OCOM to OUT NC when activated.
240 VAC maximum voltage
1/3 hp 125 VAC, 1/2 hp 250 VAC
400 VA Pilot Duty @ 240 VAC
200 VA Pilot Duty @ 120 VAC
3 A Non-inductive 24-240 VAC
Provides SA Bus communication network
RJ-12 6-position modular connector
Provides SA Bus communication network.
Provides FC Bus communication network.
Provides an optional shield connection.
AC Supply Input
Supply 20-30 VAC (Nominal 24 VAC)
The 24~ Power common; isolated from all other terminal
commons.
Wiring Requirements
(See Table 2 for A, B, or C.)
30.5 m (100 ft) maximum length
phone cord
Daisy-chained
366 m (1,200 ft) maximum length
2
0.6 to 1.5 mm (18 to 24 AWG)
[22 AWG Recommended]
Daisy-chained
1,524 m (5,000 ft) maximum length
2
0.6 to 1.5 mm (18 to 24 AWG)
[22 AWG Recommended]
16 AWG