Precision Digital Corporation ProtEX-MAX PD8-6060, Instruction Manual

Page: 20 / 68

PD8-6060 Explosion-Proof Dual Analog Input Process Meter
Instruction Manual
20
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 meter, relays
will reflect the state of the input to the
meter.
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 meter.
DO NOT apply AC or DC power to the
meter while the USB port is in use.
Isolated 4-20 mA Transmitter
Output
Output
Source Process channel A, B, or C, max or min for
channel A, B, or highest or lowest 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%.
Isolated from the input at >500 V. May be
used to power the 4-20 mA output or other
devices. All models @ 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 Separate LEDs for 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 Helios Modbus
®
Register Tables located
at www.predig.com for details.
Digital Input (F4)
Function Remote operation of front-panel buttons,
acknowledge/reset relays, reset max/min
values. See
Function Keys & Digital I/O
Available Settings on page 58 for a
complete list of capabilities.
Contacts
3.3 VDC on contact. Connect normally
open contacts across F4 to COM
Logic Levels Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC