ProtEX-MAX PD8-7000 Explosion-Proof Temperature Meter Instruction Manual
8
Isolated 4-20 mA Output
Output
Source
PV (temperature), max, min, set points 1-4,
Modbus PV input, or manual control mode
Scaling
Range
1.000 to 23.000 mA for any display range
Calibration
Factory calibrated 0.0 to 2000.0 = 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 -20 to 0
C ambient
Note: Analog output drift is separate from input
drift.
Power Supply
For Analog
Output Loop
Or Other
Uses
Terminals I+ & R: 24 VDC
10%. May be used
to power the 4-20 mA output or other
devices. Refer to Figure 6 on page 14 and
Figure 17 on page 20.
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
Serial Communications
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)
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 to 2.54 sec
Turn Around
Delay
Less than 2 ms (fixed)
Note: Refer to the P
RO
V
U
®
Modbus Register Tables located
at www.predig.com for details.
Digital Inputs & Outputs
Channels
4 digital inputs & 4 digital outputs per
module
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 termi-
nal (pin 1) to power exter-
nal devices.
Function
Assignment
The on-board digital inputs (1-4) are
designed to mimic the behavior of the
front panel buttons (Menu, F1, F2, &
F3).
If you wish to change their behavior, re-
assign F1-F3 to the desired function,
then change the corresponding digital
input to match.
MeterView Pro
System Require-
ments
Microsoft
®
Windows
®
XP/Vista/7/8/10
Communications
USB 2.0 (Standard USB A to Micro USB
B)
Configuration
Configure device settings one at a time