Isolated 4-20 Ma Transmitter Output; Usb Connection; On-Board Digital Input (F4); Modbus ® Rtu Serial Communications - Ametek DDMC Instruction Manual

DDMC Analog Input Process Meter / Controller
Isolated 4-20 mA Transmitter
Output
Output Process variable (PV), max, min, set points
Source 1-8, Modbus input, or manual control mode
Scaling 1.000 to 23.000 mA for any display range
Range
Calibration Factory calibrated:
4.000 to 20.000 = 4-20 mA output
Analog Out 23.000 mA maximum for all parameters:
Programming Overrange, underrange, max, min, and
break
Accuracy ± 0.1% of span ± 0.004 mA
Temperature
0.4 µA/°C max from 0 to 65°C ambient,
Drift
0.8 µA/°C max from -40 to 0°C ambient
Note: Analog output drift is separate from
input drift.
Isolated
Terminals I+ & R: 24 VDC ±10%. May be
Transmitter
used to power the 4-20 mA output or other
Power Supply
devices.
All models rated @ 40 mA max.
External Loop 35 VDC maximum
Power Supply
Output Loop Power supply Minimum
Resistance
24 VDC
35 VDC
(external)

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
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.
Maximum
10 Ω 700 Ω
100 Ω 1200 Ω
Windows XP/Vista/7/8/10
® ®
Modbus ® RTU Serial
Communications
Slave Id 1 – 247 (Meter address)
Baud Rate 300 – 19,200 bps
Transmit
Programmable between 0 and 199 ms
Time Delay
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
0.01 – 2.54 second
Timeout
Turn Around Less than 2 ms (fixed)
Delay
Note: Refer to the Modbus Register Tables located at
www.ametekusg.com for details.

DDMC Meter View Software

Availability Download directly from meter
System
Microsoft
Requirements
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.
10
Instruction Manual
Windows XP/Vista/7/8/10
® ®