Precision Digital PD6730X - Manual (Page 13)

PD6730X Vantageview Super Snooper Modbus Scanner Instruction Manual
13
4-20 mA Transmitter Output
OUTPUT SOURCE Modbus PV 1-16, math channel 1-4, rate/process, total, grand total, or disabled
SCALING RANGE 4.000 to 20.000 mA for any display range.
DISABLE If disabled, the output will output 3.2 mA
CALIBRATION Factory Calibrated: 0.0 to 1000.0 = 4-20 mA output
UNDERRANGE
Output Underrange: 3.8 mA
OVERRANGE Display Overrange: 20.5 mA
Output Overrange: 20.5 mA
ACCURACY ± 0.05% span ± 0.004 mA
TEMPERATURE
DRIFT 0.08 µA/ C max from -40 to 75C ambient
EXTERNAL LOOP
POWER SUPPLY 30 VDC maximum
OUTPUT LOOP
RESISTANCE Power supply Minimum Maximum
24 VDC 10  750 
30 VDC 100  1100 
Note: loop-powered backlight subtracts 150

from maximum resistance figures
above.
Open Collector Outputs
OUTPUT
ASSIGNMENT Two open collector pulse outputs Out 1 and Out 2.
Individually programmable for Modbus PV, math channel, pulse rate, total, or
grand total alarms; Modbus PV, math channel, pulse rate, total, or grand total
pulse outputs; or retransmitting of pulse inputs; constant timed pulse output;
quadrature outputs (requires Out 1 and Out 2); or off.
RATING Isolated open collector, off: 24 VDC max, on: <1 V @ 150 mA max
ALARM OUTPUT Assign to Modbus PV 1-16, math channel 1-4, or rate for high or low alarm trip
point.
Assign to total or grand total for total or grand total alarms.
ALARM
DEADBAND 0-100% FS, user selectable
ALARM
ACKNOWLEDGE Front panel SCAN/ENTER button resets output and screen indication.
PULSE OUTPUT
COUNT The pulse output count (COUNT) is programmable from 0.000001 to 9999999.
PV and math channels generate a frequency equal to the PV or math value
divided by the Count value. Rate pulses are generated at a rate of one output
pulse per Count value. Total and grand total pulses are generated for every
total or grand total increment selected (e.g. Count value of 100 will generate
one pulse every time the total is incremented by 100 units).
Pulse rate retransmission outputs one to one for input pulses, up to maximum
output speed. Count is not used for retransmitting outputs.
PULSE OUTPUT
PULSE WIDTH Unless otherwise stated, pulses are 50% duty cycle for required frequency.
A pulse rate retransmit output will generate 100 to 130 μs pulses at the falling
edge of every input pulse.
PULSE OUTPUT
MAXIMUM
FREQUENCY 5 kHz, pulse width at 50% duty cycle.
If the outputs exceed 5 kHz, the scanner will display pUlse OVERRNG
QUADRATURE
OUTPUT Output set to quadrature will lag the other pulse output by 90° (1/4 duty cycle)
at output frequency. Minimum 1 Hz
TIMER OUTPUT Programmable on and off time, repeating cycle. Minimum period 0.1 second,
maximum 100,000 seconds. Minimum pulse time 0.01 second, maximum
10,000 seconds.