Micromod MOD: Remote I/O Modules for use with 2020N Remote I/O Interface Module - Manual (Page 16)

Remote I/O Modules
ELECTRICAL CONNECTIONS
3.5 ECZ REMOTE I/O MODULE CARRIER TERMINAL IDENTIFICATION
All of the remote I/O units must be mounted on a plug-in base ECZ, with screw termination.
The plug-in base is suitable for rail mounting: (35 mm EN 50 022).
The ECZ base consists:
30 screw terminals for the connecting cables .. 1
8 dip switches to set the address of the unit .... 2
2 holes to allow screw fixing ............................ 3
One 96 way connector for connection
to the plug-in unit ............................................ 4
1 voltage selector 24 VDC,
120 and 230 VAC .......................................... 5
Rail fixing ......................................................... 6
The ECZ base standard terminals are:
Terminal 1
: communication bus 2
Terminal 2 : communication bus 1
Terminal 3 : shield of communication bus
Terminal 16 : power supply 24 VDC or 120 VAC
or 230 VAC
Terminal 17 : power supply 0 VDC or 120 VAC
or 230 VAC
Terminal 18 : functional earth
Termination guidelines are:
· on the plug-in base ECZ use 60°C copper
conductor only
Cross section:
· Bus Wiring Terminal: twisted pair AWG 24 (0.22 mm2) to AWG 18 (0.8 mm2)
· Earth Terminal: rigid or stranded connector AWG 10 (5.2 mm2)
· Others terminals:
- Inputs: stranded connector AWG 18 (0.8 mm2) to AWG 14 (2.1 mm2)
- Outputs: stranded connector AWG 14 (2.1 mm2)
- Power Supply: AWG 14 (2.1 mm2)
· Screws tightening torque (for guidance only):
7 Lb. in (0.8 N.m).
An LC filter is built into the base.
C : capacitor 1 nF class Y
L : self 3
Ω, 330 µH
Insertion of a unit with the incorrect power supply is
prevented by the voltage selector.
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