DE-3000 IOI 7-17
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6
5.4 PRESSURE TRANSDUCER
Mount the pressure transducer in the panel or in a manifold or tube off of the
engine. Do not expose the pressure transducer to temperatures above 221°F
(105°C). The second terminal module should be placed close to the first and the
wire connecting them should be free of high-powered panel signals.
5.5 TEMPERATURE TRANSDUCER
Mount the temperature transducer in a thermowell on the engine or machine.
The actual sensor is located at the bottom of the transducer body; to ensure
accuracy, the tip of the probe should be surrounded by the measured media.
6.0 WIRING (SEE WIRING DIAGRAMS)
6.1 SYSTEM COMPONENT WIRING
A DB-25 male/female cable, 693115-x series or equivalent, is used to connect
the Terminal Module to the Display Module and secured with the cable lock
screws. If mounted on the same mounting rail, plug the Terminal Module directly
into the Power Supply Module using the DB-25 D-Sub connectors at the ends
of the modules and secure them together with the screws and screw locks cap-
tive to the connectors. If the Power Supply Module and the Terminal Module are
mounted separate from each other (must be mounted in the same panel) a DB-
25 male/female cable such as P/N 693115-1 or equivalent is used to connect
these modules.
6.2 POWER WIRING
Connect the supply power wires to the 12-24Vdc input power terminals on the
power supply, plus to terminal (+) and minus to terminal (−); power requirement
is 12 to 24Vdc (10 watts max.). The DC− terminal must be connected to panel
ground which should be the same as engine ground.
This is the return path for normally-open sensors and MUST be connected for
proper operation. DO NOT ground this device directly to the ignition system
common coil ground.
6.3 SENSOR WIRING DISCRETE INPUTS
The sensor leads connect to the removable terminal strips on the Terminal Mod-
ule. The terminal numbers correspond to the display numbers which also have a
user assigned 20-character label associated with it. The sensor inputs are num-
bered 01-30, 01-45 or 01-60. With AUTO START enabled, the Remote Reset
on the terminal board is wired for a start switch. Sensor inputs 01–60 can be
configured as class A, class B or class C logic. Any discrete sensor point can be
wired for normally-open or normally-closed operation.
• Normally-open (N/O) sensor switches are wired with one wire to the
bottom terminal strip of the respective sensor number and the other to
engine ground which should be the same as power minus (−). A short
jumper from the bottom terminal to the top terminal must be connected
for normally-open sensors. (See wiring diagrams)
• Normally-closed (N/C) sensor switches are wired with one wire to the bot-
tom terminal strip and the other to the top terminal strip of the respective
sensor number. Note that the short jumper wire must be removed.
• Remote stop and remote reset are wired the same as the sensor
switches, and can be used with either normally-open or normally-closed
contacts.
Use a wire size between 16 AWG (max.) and 24 AWG (min.) to connect the sen-
sor switches to the terminal strip connector. Strip the insulation back 3/8"; twist
the exposed wires tightly together. Insert the exposed wire completely into the
terminal strip and securely tighten the clamping screw. Wires running to sensor
switches must be in good condition or replaced with new wires. When running
wires, take care not to damage the insulation and take precautions against later
damage from vibration, abrasion, or liquids in conduits. An explosion-proof con-
duit is not required. However; wires should be protected from damage by run-
IMPORTANT: DO NOT EXCEED THE
ABSOLUTE MAXIMUM RATING OF THE
TRANSDUCERS, 350°F (176°C) FOR THE
691202/203-300 OR 450°F (232°C) FOR
THE 691212/213- 450. CARE SHOULD
BE TAKEN TO PROTECT THE WIRING AND
CONNECTORS FROM CONTACT WITH HOT
SURFACES.
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