USER INPUT WIRING
User inputs (PGM.DIS., E1-CON, and optional E2-CON) are digital inputs
that are active when connected to TBA #5 Common. Any form of mechanical
switch, sinking collector logic with less than 0.7 V saturation may be used.
The use of shielded cable is recommended. Follow the EMC Installation
Guidelines for shield connection.
OUTPUT WIRING
Relay Connections
To prolong contact life and suppress electrical noise interference due to the
switching of inductive loads, it is good installation practice to install a snubber
across the contactor. Follow the manufacturer’s instructions for installation.
Note: Snubber leakage current can cause some electro-mechanical devices to
be held ON.
SELECTING THE INPUT RANGE AND EXCITATION
To select or change the input range and/or excitation, the following steps
apply.
1. Remove terminal block
“A” (TBA)
.
2. Using a pair of long nose pliers, remove the desired jumper
(input range on
left, excitation on right)
and re-position it in the location corresponding to
the range being selected.
(When the unit is shipped from the factory, the
jumpers are in position #1 and position #4.)
Looking in at the rear of the unit, the position numbers and their
corresponding ranges are as follows, from left to right:
POSITION #1 +/-20.000 mV Signal Input
POSITION #2 +/-200.00 mV Signal Input
POSITION #3 +5 v Excitation Output
POSITION #4 +10 v Excitation Output
3. Replace terminal block
“A” (TBA)
. Input range and excitation selection is
now complete.
Although the unit has been factory calibrated for both ranges, greater
accuracy can be achieved by calibrating any individual range.
(Refer to the
“Programming Module #1” section for the calibration procedure.)
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Rear View Of IMS With TBA Terminal Removed
