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ACTIONI/Q® Q501 Loop Powered Multi-Channel DC Input Isolating, 2-Wire Transmitter

Provides One or Two Isolated 4-20mA Output Current Loops in Proportion to One or Two DC Inputs.


Features:
  • Multi-Channel Design
  • Prevents Ground Loops
  • Standard Input Ranges
  • High Density DIN Rail Mounting
  • SnapLocTM Plug-in Terminals<
  • Output Loop Powered from 12 to 35VDC
Q501-1xxx (1 channel out)
Q501-2xxx (2 channel out)

Description
The Q501 is a DIN rail mount, DC input, single or dual channel, two- wire transmitter. Each channel accepts a DC voltage or current input and provides an isolated 4-20mA output. Each channel is fully isolated (1800VDC) from input to output and channel to channel.

All I/Q modules feature SnapLoc plug-in screw terminals for easy installation and low Mean-Time-To-Repair (MTTR). Two or more modules can slide together and interlock for solid, high density mounting. This is accomplished by removing either the foot, or the adjacent unit's faceplate (for right-hand side or left-hand hand side mounting, respectively). The module to be attached will easily slide on to the side of the mounted unit.

Application
DC input, two-wire transmitters are used to isolate and convert a DC voltage or current into a proportional 4-20mA signal. Two- wire transmitters are primarily used in remote locations near the sensor since they reduce the probability of signal errors and save wiring costs by utilizing the two power wires to send the 4-20mA signal. The current signal is usually monitored by a control system or displayed for an operator.

Typically, DC voltages or currents from various field instruments (e.g. level, flow, pressure and position sensors) are used to monitor and control a manufacturing process. Voltage signals can only run a short distance to a panel without errors caused by noise or lead resistance in the wires. These sensor (voltage) signal wires are usually terminated at the two-wire transmitter and converted into a 4-20mA signal which is highly immune to noise and not affected by lead resistance, both of which can cause significant errors in voltage signals transmitted over long distances.

The 1800VDC isolation capability of the Q501 prevents ground loops from causing errors in DC voltage or current signals and can reduce susceptibility to Radio Frequency Interference (RFI). Isolation also provides protection from high voltages and current spikes which can damage expensive Supervisory Control And Data Acquisition (SCADA) equipment, such as a PLC or DCS.

Click here for the complete information in .pdf format

 

 
 
CTH Controls Inc.   CTH Controls Inc.
6-1500 Upper Middle Rd. W. Suite 220
Oakville, ON, Canada, L6M 0C2
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
sales@cthcontrols.com
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