Ametek DDMC, Instruction Manual

Page: 10 / 48

DDMC Analog Input Process Meter / Controller
Instruction Manual
10
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.
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
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.
On-Board 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
41
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
Additional I/O Up to 2 external modules with 4 digital
inputs and 4 digital outputs each can be
added.
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.ametekusg.com for details.
DDMC Meter View Software
Availability Download directly from meter
System
Requirements
Microsoft
®
Windows
®
XP/Vista/7/8/10
Communications USB 2.0 (for programming only)
(Standard USB A to Micro USB B)
RS-232 adapter, RS-485 adapter and
RS-485 to USB converter
(programming, monitoring, and data
logging)
Configuration Configure meters one at a time
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.