Specifications – GAI-Tronics 12578-003 Monitored Input Module (MIM) User Manual
Page 11
Pub. 42004-715L2C
Model 12578-003 Monitored Input Module (MIM)
Page 11 of 12
f:\standard ioms - current release\42004 instr. manuals\42004-715l2c.doc
06/12
Specifications
Electrical
Power requirements ........................................................................................ 9–15 V dc (12 V dc nominal)
Current draw .................................................................... 300 mA maximum @ 12 V dc (no ground faults)
Number of input loops ................................................................................................................. Eight loops
Maximum devices on input loop ..................................................................................... Unlimited (Mode 1)
One (Mode 2)
One (Mode 3)
Unlimited (Mode 5 – Dry)
One (Mode 5 – Wet)
Input/output ....................................................................................................................................... Power in
Power out
Page line (FSK) in
Page line (FSK) out
Eight field inputs
Data communications ............................................................................................................................... FSK
End-of-line device ................................................................................................................ 20 k
(Mode 1)
5.1
k
in series with 15 k across contact (Mode 2)
5.1
k
in series with 15 k across contact (Mode 3)
None (Mode 5)
Field Inputs
Mode 1:
Contact closure resistance (activated) ................................................................................... 1 k
maximum
Open fault detection ............................................................................................................ Minimum 65 k
Ground fault detection ......................................................................................... Less than 200
to ground
Modes 2 and 3:
Contact closure resistance (Mode 2: activated/ Mode 3: de-activated) ................................ 3 k
maximum
Open fault detection ............................................................................................................ Minimum 65 k
Ground fault detection ......................................................................................... Less than 200
to ground
Wire-to-wire short fault detection ........................................................................................ Less than 200
Mode 5 (Dry)
Contact closure resistance ................................................................................................... 900
maximum
Mode 5 (Wet)
DC input voltage range ................................................................................. 20–30 V dc (24 V dc nominal)
Limitations:
Cable limitations ........................................................................................ 100
maximum loop resistance
Terminals:
Minimum conductor size ......................................................................................... No. 28 AWG (0.5 mm
2
)
Maximum conductor size ......................................................................................... No. 12 AWG (3.0 mm
2
)