DE-3000 IOI 7-17
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3.4 The external connection for the two serial RS-485 communication ports is on
the Power Supply Module terminal strips. Port 2 is for RS-485 serial communi-
cation to future Altronic instruments, and port 3 is for RS-485 serial communi-
cation to a PC (personal computer) or a PLC (programmable logic controller) to
perform remote monitoring or control functions if desired.
3.5 Terminals marked IGN IN and PU IN are used by the DE-3000 system to detect
either engine rotation or ignition system firings. This input monitors changing
signals such as those Seen on either the ignition shutdown lead or a magnetic
pickup monitoring an engine mounted gear.
THE MAGNETIC PICKUP INPUT MUST BE USED FOR APPLICATIONS EN-
ABLING THE AUTO START OR OEM ENGINE CONTROL FUNCTION.
• The IGN IN terminal connects to the positive (+) C.D. ignition shutdown lead.
• The PU IN terminal connects to one magnetic pickup input; the other pickup
wire connects to the minus (−) terminal on the Power Supply Module.
4.0 TERMINAL MODULE
4.1 The Terminal Module is made to be rail-mounted and is the point of interface
between the field sensor wiring and the DE-3000 control system. A removable
dual terminal strip is used for the connection of the system to the equipment
mounted discrete sensors which may consist of up to 30 inputs, where any of
the 30 can be used for either a normally-open, normally-closed switch, or analog
inputs including K- or J-type thermocouples. These are listed as channels 01–
30 for the 691171-1 terminal board. They accept industry-standard transducer
signals in the range of 0-5 VDC. Connections from the Terminal Module to the
Display Module are made using the 693115-x series Cable Assembly.
4.2 The DE-3000 is designed to operate with industry-standard voltage or current-
amplified output transducers in the range of 0 to 5Vdc or 0 to 25mA. Four se-
ries of transducers are available from Altronic: pressure transducers 691201-x,
691204-x and temperature transducers 691202/203-300, 691212/213-450.
4.3 Another terminal board assembly may be added to increase the inputs from 30
to either 45 or 60 inputs. Use cable 693133-1 to connect the two boards. The
691175-2 provides an additional 15 inputs, 4 digital outputs, 2 analog outputs
and an extra speed (pickup) input. The 691171-2 provides an additional 30
inputs, 8 digital outputs, 2 analog outputs, and an extra speed (pickup) input.
4.4 PRESSURE TRANSDUCERS
The pressure transducers, Altronic P/N 691201-x and P/N 691204-x, are pack-
aged in a rugged sealed case with a NPT pressure port, a corrosion resistant
media cavity, and a Packard Electric Metri-Pack connector. The ranges available
are 0-100, 300, 500, 1000, 2000, and 5000 PSIG for the 691201-x series
and 0-50,100, 300, 500 PSIA for the 691204-x series, all of which have an
overload rating of 1.5 times full scale without damage. The three wires from the
transducer are: +5 volt excitation, +0.5 to 4.5 volt output, and minus return.
These three wires connect directly to the back of the Terminal Module using
cable assembly P/N 693008-x.
4.5 DIFFERENTIAL MEASUREMENTS
Differential pressures or temperatures may be measured by using two consecu-
tive channels. The transducers used to measure differential values must be of
the exact same type and range. The first channel of the pair will display the
basic parameter it is monitoring and the second channel of the pair will display
the numeric difference in engineering units of its value subtracted from the first
channel’s value. Setpoints for each channel monitor the displayed value of that
channel. The second channel setpoints monitor the differential value.
4.6 TEMPERATURE TRANSDUCER
The temperature transducers, Altronic P/N 691202-300, 691203-300 with a tem-
perature measurement range of +5 to 300°F and the 691212-450, 691213-450
with a temperature range of -40 to +450°F are packaged in a sealed, stainless steel
NOTE: AN INSTALLATION MAY USE ONLY
ONE OF THE TERMINALS IGN IN, PU IN,
OR T+.
691171-1 FOR CHANNELS 01-30
691171-2 FOR CHANNELS 31-60
691175-2 FOR CHANNELS 31-45
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