GAI-Tronics LE300-IP Page/Party Line Extender - Manual (Page 67)

Pub. 42004-488C
M ODEL LE300-IP P AGE /P ARTY
®
L INE E XTENDER P AGE 64 of 68
e:\standard ioms - current release\42004 instr. manuals\42004-488c.doc
09/14
Contact Inputs
Dry contact input open resistance ................................................................................................. 20,000 
Dry contact input closed resistance .................................................................................................... 200 
Wet contact input open voltage ........................................................................ 2.6  voltage  +3.6 volts dc
Wet contact input closed voltage ...................................................................... 0.0  voltage  0.23 volts dc
Contact input allowed voltage ......................................................................... 0.0  voltage  +3.6 volts dc
Contact input sink current ........................................................................................................... 1.0 mA dc
Contact input state duration ............................................................................................................... 50 ms
Contact input to contact output delay ................................................................................................ 50 ms
Contact input to contact output jitter .................................................................................................. 10 ms
Contact input to contact output pulse width tolerance ....................................................................... 10 ms
N OTES :
1. Rapidly changing contact inputs may or may not be detected.
2. Contact input to contact output specifications does not include the effects of relay bounce.
3. The contact input’s negative terminal is tied directly to the LE300-IP’s signal ground.
4. Wet contact input voltages are measured at the input terminals on the I/O Connection Module.
5. The “wet contact input closed voltage” may be difficult to achieve when connecting a bipolar open
collector output to a contact input.
6. A driving high wet contact input will source current to the LE300-IP when the LE300-IP is not
powered. This current may or may not prevent the LE300-IP from powering up properly.
7. Be aware of the ground loop(s) formed when using wet contact inputs.
Mechanical
Enclosure Material ................................................................................................................................. Steel
Unit dimensions ....................................... 20.0 H
 20.0 W  6.9 D inches (508  508  173 mm) nominal
Unit weight........................................................................................................................................... 40 lbs.
Enclosure Environmental Rating .................................................................................................... NEMA 4
Environmental
Temperature range ................................................................................. 0° C to +50° C (+32° F to +122° F)
Relative humidity ................................................................................................... 10–85% non-condensing