PD8-6262 Explosion-Proof Dual Analog Input Flow Rate/Totalizer
Instruction Manual
16
Relays
Rating
4 SPDT (Form C) internal and rated
3 A @ 30 VDC and 125/250 VAC resistive
load; 1/14 HP (
≈
50 W) @ 125/250 VAC for
inductive loads
Noise
Suppression
Noise suppression is recommended for each
relay contact switching inductive loads; see
for details.
Relay
Assignment
Relays may be assigned to channel A or B
rate, total, or grand total; channel C; or
Modbus control.
Deadband
0-100% of span, user programmable
High or Low
Alarm
User may program any alarm for high or low
trip point. Unused alarm LEDs and relays
may be disabled (turn off).
Relay
Operation
•
Automatic (non-latching) and/or manual
reset
•
Latching (requires manual
acknowledge) with or without clear
•
Pump alternation control (2-4 relays)
•
Sampling (based on set point and time)
•
Off (disable unused relays and enable
Interlock feature)
•
Manual on/off control mode
Relay Reset
(Acknowledge)
User selectable via front panel button,
F4 digital input, external contact closure on
digital inputs, or through serial
communications.
1.
Automatic reset only (non-latching),
when the input passes the reset point.
2.
Aut manual reset at any time
(non-latching)
3.
Manual reset only, at any time
(latching)
4.
Manual reset only after alarm condition
has cleared (L)
Note:
Front panel button, F4 terminal at
back of totalizer or digital input may be
assigned to acknowledge relays
programmed for manual reset.
Time Delay
0 to 999.9 seconds, on & off relay time delays.
Programmable and independent for each relay
Fail-Safe
Operation
Programmable and independent for each
relay.
Note:
Relay coil is energized in non-alarm
condition. In case of power failure, relay will
go to alarm state.
Auto
Initialization
When power is applied to the totalizer, relays
will reflect the state of the input to the
totalizer.
USB Connection
Function
Programming only
Compatibility
USB 2.0 Standard, Compliant
Connector
Type
Micro-B receptacle
Cable
USB A Male to Micro-B Cable
Driver
Microsoft
®
Windows
®
XP/Vista/7/8/10
Power
USB port provides power to the totalizer.
DO NOT apply AC or DC power to the
totalizer while the USB port is in use.
Isolated 4-20 mA Transmitter
Output Option
Output
Source
Input channels A or B, rate, total, or grand
total; channel C; max or min for channel A
or B; highest or lowest max or min of A and
B; set points 1-4; 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%.
Used to power the 4-20 mA output.
All models rated @ 25 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
RS-485 Serial Communications
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status
Indication
Status Indication / Separate LEDs for
Power (METER LINK), 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 ProtEX-MAX Modbus Register Tables
