Precision Digital Corporation PD6100-6H0, Инструкция по эксплуатации

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P
RO
V
U
™ PD6100 Strain Gauge, Load Cell, and mV Meter
Instruction Manual
14
Figure 11. PD6100-##7 Connectors Label
•
DO NOT connect any equipment other than
Precision Digital’s expansion modules, cables, or
meters to the RJ45 M LINK connector. Otherwise
damage will occur to the equipment and the
meter.
Power Connections
Power connections are made to a two-terminal
connector labeled POWER. The meter will operate
regardless of DC polarity connection. The + and -
symbols are only a suggested wiring convention.
Figure 12. Power Connections
Signal Connections
Signal connections are made to a six-terminal
connector labeled SIGNAL. The EX+ and EX-
terminals are used to sense the sensor excitation
voltage for ratiometric operation, when the sensor is
powered externally (switch 1 is off).
Switch Configuration
Setup and programming is performed both through
the front panel buttons and switch settings shown
below. The switch configuration must correspond to
the
Setup and Programming starting on page 19
(same range, type, etc.).
Figure 13. Strain Gauge Configuration Switch
Excitation (Switch 1)
The excitation switch designates whether the meter
will use its internal power supply or an external power
supply.
OFF Excitation
External
Excitation
When switch is
turned OFF, an
external power
supply is used.
ON Excitation
Internal
Excitation
When switch is
turned ON, the
P
RO
V
U
's power
supply is used.
Range (Switch 2)
The range switch adjusts the gain of the internal
circuitry. Narrower ranges require more amplification.
OFF Range
Lower
internal
gain
Turn this switch OFF
for the following
input ranges: 150,
300, ±150, or ±250
mV.
ON Range
Higher
internal
gain
Turn this switch ON
for the following
input ranges: 15, 30,
±15, or ±25 mV.
Polarity (Switch 3)
The polarity switch selects whether the range is
unipolar and starts at zero (i.e. 0 to 30 mV) or bipolar
and starts at a negative value, or below zero (i.e. -15
to +15 mV).
OFF Polarity
Range
starts
below zero
(bipolar)
Turn this switch OFF
for the following
input ranges: ±15,
±25, ±150, or ±250
mV.
ON Polarity
Range
starts at
zero
(unipolar)
Turn this switch ON
for the following
input ranges: 15, 30,
150, or 300.
Source (Switch 4)
The source switch tells the P
RO
V
U
whether the input
is a strain gauge bridge (i.e. Figure 16. Multiple Strain
Gauges Connected Through Junction Box , page 15 ),
or it is a signal from a 2 or 4 wire transducer, or mV
source (i.e.
Figure 17. mV Transducer Input
Connections , page 15 )
OFF Source
Source is
strain
gauge
bridge
Turn this switch
OFF if the source
is a strain gauge
bridge
ON Source
Source is
mV input
transducer
Turn this switch
ON if the
connected source
is a transducer*
*Ratio should be set to NO in Setup Input Menu
SIGNAL
COM SG- F4 SG+ EX-
3 4 1 2 5
EX+
6
CONFIG
R
I- I+
MA OUT
1
3 2
POWER
+
-
M-LINK
C NO NO NC NC C
RELAY4 RELAY3
4 3 6 5 2 1
C NO NO NC NC C
RELAY2 RELAY1
4 3 6 5 2 1
1 2 3 4 5 6 7 8
2 1
24 V
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+
-
3 4
SG - SG +