Helios Large Display Pulse Input Rate/Totalizer Instruction Manual
PD2-6300
8
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 24
on page 20.
All models rated @ 40 mA max.
External Loop
Power Supply
35 VDC maximum
Output Loop
Resistance
Power supply Minimum Maximum
24 VDC
10
700
35 VDC
(external)
100
1200
RS485 Serial Communications Terminal
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status
Indication
Separate LEDs for Power (P),
Transmit (TX), and Receive (RX)
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
for details.
Digital Input & Output Terminal
Channels
4 digital inputs & 4 digital outputs
Digital Input
Logic High
3 to 5 VDC
Digital Input
Logic Low
0 to 1.25 VDC
Digital Output
Logic High
3.1 to 3.3 VDC
Digital Output
Logic Low
0 to 0.4 VDC
Source
Current
10 mA maximum output current
Sink Current
1.5 mA minimum input current
+5 V Terminal
To be used as pull-up for digital
inputs only.
Connect normally open pushbuttons
5 V & DI 1-4.
WARNING!
DO NOT use +5 V
terminal to power
external devices.
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