3KP78 - 1.3
3000PLUS
WITH
5D78 I
NSTRUCTION
M
ANUAL V
. SB.3
1. I
NTRODUCTION
S
PECIFICATIONS
M
ODEL
3000PLUS
Case
: Extruded metal chassis, mountable to user’s panel (see
Section 1.C); secure rear connections via screw terminals
Dimensions
: See Fig. 1, below
Power Requirements
: 24 VDC ± 10%; 300 mA nom.; 350 mA
max.; 8.4 W; optional AC adaptor (
Model 3KPS1
) available
Operating Temperature Range
: 0° F to 130° F (-18° C to
55° C)
Operating Relative Humidity
: 10% to 95%, noncondensing
Instrument Weight
: 1 lb., 10 oz. with 5D module installed
A/D Conversion:
16-bit
Sample Rate:
10 kHz; delay of 20-25 msec for limit evaluation
of DAC output
Data Display:
6-digit red LED; count by 1, 2, or 5 resolution to
maximum count of 199990 (see Section 1.D); selectable dig-
ital filtering
Displayable Data Channels:
(1) ±5 VDC Scaled Output; (2)
Auxiliary DAC Output; (3) Scaled Voltage Output; selectable
via front panel or software
Programmable Processing of Auxiliary DAC Output
(Channel 2):
Limit Logic:
Three limit zones (LOW/OK/HIGH) with front-
panel annunciation and corresponding contact relay out-
puts (see below); latching or nonlatching limits;
user-adjustable hysteresis windows; selectable relay
polarity
Positive and Negative Peak Capture
: Controlled by logic
input (see below); selectable “peak defeat” and “backout”
thresholds; user-adjustable leak rate
Tare Offset:
User-adjustable offset applied and released via
logic input (see below)
Hold Command:
Applied and released via logic input (see
below) or software command
Analog Output (Channel 3):
Selectable ± 0 to 5 VDC, ± 0 to
10 VDC, or 4-20 mA, single-ended; 14-bit resolution; 47-Hz
filter; update rate of 20 msec
TTL Logic Inputs (UNLATCH, TARE, PEAK, HOLD) and Out-
put (HAVE PEAK)
: Nominal 0 - 5 V, where 5 V = Logic 1
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A
A
A
A
1.70 "
4.41 "
7.17 "
0.22 "
Fig. 1
3000PLUS Dimensions
(“true”); ±25 V without damage; noise immunity 1 V; internal
pull-down nom. 4.7 k
Ω
; all inputs assume Logic 0 state in the
absence of connection
Relay Logic Outputs (LIMIT HI, LIMIT OK, LIMIT LO)
: Two for
each limit; selectable polarity; 8 A, 250 VAC at full resistive
load; switch lifetime at 1 A exceeds 100,000 operations
Communications:
Three-wire RS232 at fixed 19,200 Baud, 8
Data Bits, 1 Stop Bit, No Parity; for setup and data transfer
Front-Panel Instrument Indication:
Limit status, displayed
channel, setup stage, and overrange (flashing display)
M
ODEL
5D78
Input Overvoltage Protection
: Up to 240 VAC rms on all Sig-
nal and Excitation lines
ESD Protection
: Up to 4 kV on all connections
Isolation
: 1500 VAC between input and output terminals; 1500
VAC between I/O terminals and power supply / communica-
tions terminals
Transducer Types
: Conventional 4-arm strain gage bridges,
typically transformer-coupled, 120
Ω
to 10 k
Ω
; zero range is
20% of the stated full scale. A screw terminal is provided for
user-supplied shunt calibration resistor (see Fig. 8).
Input Ranges (Full-Scale)
: See Table 1, below; selectable
when the 3000PLUS meter is configured (NOTE: the highest
range selection accommodates actual inputs as high as 4.8
mV/V*)
Excitation Frequency
: 3.27, 5.00, or 10.00 kHz; selectable
when the 3000PLUS meter is configured
Excitation Voltage
: Nominal 3 VAC rms
Accuracy:
Dependent on range and excitation; see Table 1
Amplifier
:
Normal-Mode Range
: 15 V rms operating; 240 V rms with-
out damage
Input Impedance (Differential)
: Greater than 350 k
Ω
Offset
: Initial: ±0.05% of full scale; vs. temperature: ±25
ppm/°C; vs. time: ±10 ppm/month
(cont’d)
* See Table 2 in
Appendix B
for the “practical” ranges that apply
to the 5D78
RANGE (RNG)
setting.
