Setra LD 330 Operating Manual
Setra Local Display
Model LD330
Installation and Operating Instructions.
Setra’s Model LD330 is a small local display designed for convenient
in-line installation. It can be used with voltage output and current output tranducers
4-pin bayonet connectors (which meet dimensional requirements of MIL-C-26482
and the MIL STD 3116) Amp jack, 15 Pin and
9 Pin D-Sub connectors.
1.0 INSTALLATION
The LD330 can be supplied with a variety of integral electrical connectors to connect to the
mating connectors on the transducer. Consult part number chart below to determine the
proper configuration. For setting optimum viewing angle, the LD330 display housing can
rotate, at least 270 degrees, with respect to the connector. DO NOT ATTEMPT TO FORCE
ROTATIONAL ADJUSTMENT BEYOND STOP POSITION.
The LD330 is available in a variety of configurations.
2.0 ELECTRICAL CONNECTIONS
The LD330 can be supplied with different style connectors to the input transducer and to
the power supply. The power supply can be supplied with cable, also. Confirm the electrical
connection supplied , and refer to the appropriate column below for
proper connections.
2.1 Voltage Units
9 PIN 15 PIN 5 PIN
CABLE BAYONET D-SUB D-SUB MINI-DIN MOLEX
CONNECTION WIRE PIN PIN PIN PIN
+ EXCITATION RED A 4 7 1 2
+ OUTPUT GREEN B 1 2 2 1
– OUTPUT WHITE C 8 12 4 4
– EXCITATION BLACK D 9 5 5 5
CASE GND DRAIN SHELL SHELL SHELL 3 6
2.2 Current Units
9 PIN 15 PIN 5 PIN
CABLE BAYONET D-SUB D-SUB MINI-DIN MOLEX
CONNECTION WIRE PIN PIN PIN PIN
+ EXCITATION RED A 4 7 1 2
– EXCITATION BLACK D & B 9 5 4 5
CASE GND DRAIN SHELL SHELL SHELL 3 6
1
3.0 PANEL-MOUNT
CONFIGURATION
1.00
25.4
ø0.15
3.81
1.55
39.37
If the panel-mount configuration is
supplied, see Figure 1 for cut-out
dimensions. Insert the panel-mount
display through the front and secure
2.25
57.2
1.88
47.8
1.73
43.18
Cut Out
Dimensions
to the panel with four mounting
screws (not supplied).
1.65
41.9
Figure 1
4.0 CALIBRATION
The LD330 is factory calibrated to display engineering units. The multi-turn pots on the front
face are for zero and span display adjustment. Setra recommends that the zero adjustments
be done using the transducer zero potentiometer whenever possible. The display zero
potentiometer should only be used for minor adjustments. Never adjust the span potentiometer unless proper calibration equipment is used and proper calibration procedures are
followed.
4.1 Zero & Sensitivity Adjustment
The zero and sensitivity (span) potentiometer are located on the front of the unit just
under the digital display. Remove the protective plugs to access the potentiometers.
1. Apply zero pressure to the transducer and adjust the LD330's zero potentiometer if
the LD330 does not display "0".
Note: For a compound range (eg -14.7 to 100 psig unit) apply "0" psig pressure to
the transducer and adjust the LD330 zero potentiometer until the display is "0". Do
not apply -14.7 psig and attempt to adjust the display to "-14.7".
2. Apply full scale output to the transducer/transmitter and adjust the span potentiometer on the LD330 if the LD330 does not display the correct value. If the adjust-
ment seems sensitive verify that the LD330 is the correct range for your transducer.
Repeat steps 1 and 2 as necessary.
4.2 Decimal Points
The LD330 decimal point is factory set to custom specified range. Figure 2 below
shows the jumper settings required for decimal point settings.
To access this jumper, remove the 2 screws on the backside of the
LD330 housing and
remove the back
cover. Remove jumper
if decimal point is not
required.
4.3 Backlighting
The LD330V comes
standard with green
backlighting. LD330C is not
offered with backlighting. To disable backlighting of LD330V, remove the Back Light
Jumper shown in figure below.
2
Figure 2
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