Viatran DL Series Analog Input Process Meter Instruction Manual
12
Isolated 4-20 mA Transmitter Output
OUTPUT
SOURCE
Process variable (PV), max, min, set points 1-8, Modbus
input, or manual control mode
SCALING RANGE
1.000 to 23.000 mA for any display range
CALIBRATION
Factory calibrated: 4.000 to 20.000 = 4-20 mA output
ANALOG OUT
PROGRAMMING
23.000 mA maximum for all parameters:
Overrange, underrange, max, min, and break
ACCURACY
± 0.1% of span ± 0.004 mA
TEMPERATURE
DRIFT
0.4 µA/
°
C max from 0 to 65
°
C ambient,
0.8 µA/
°
C max from -40 to 0
°
C ambient
Note: Analog output drift is separate from input drift.
ISOLATED
TRANSMITTER
POWER SUPPLY
Terminals I+ & R: 24 VDC
±
10%. May be used to power the
4-20 mA output or other devices. Refer to Figure 5 on page
17 and Figure 16 on page 23.
All models rated @ 40 mA max.
EXTERNAL LOOP
POWER SUPPLY
35 VDC maximum
OUTPUT LOOP
RESISTANCE
Power supply
Minimum
Maximum
24 VDC
10
Ω
700
Ω
35 VDC (external)
100
Ω
1200
Ω
Modbus
®
RTU Serial Communications
SLAVE ID
1 – 247 (Meter address)
BAUD RATE
300 – 19,200 bps
TRANSMIT
TIME DELAY
Programmable between 0 and 199 ms
DATA
8 bit (1 start bit, 1 or 2 stop bits)
PARITY
Even, Odd, or None with 1 or 2 stop bits
BYTE-TO-BYTE
TIMEOUT
0.01 – 2.54 second
TURN AROUND
DELAY
Less than 2 ms (fixed)
Note: Refer to the Modbus Register Tables located at www.viatran.com for
details.
