Options
Converter 0-10V/4-20mA Input (M4902)
Connects to the Load Cell Input on R400 series indicators for a voltage or current input. Useful where an indicator needs to take an input from load pins on a crane scale for example. Suitable for pressure, displacement or strain transducers that output 4-20mA or 0-10V analogue signals.
rin-LINK
The magnetically coupled rin-LINK on the front panel provides a convenient temporary connection to a laptop – no need to access rear of the indicator.
- Transfer of setup and calibration information
- Download of software upgrades
Relay Modules (M4901 and M4906)
The relay modules, used in conjunction with an I/O module, provide 8 voltage free relay outputs rated to 250VAC and 8A, available in either 12 or 24V.
Provides N/O (normally open) and N/C (normally closed) contacts for each output.
Models
The R457 flexibility is provided through its broad range of modules that are easy to configure and neatly connect into the rear of the indicator. 1 module slot of the R457 is equipped with M4223 Lua module as standard. There are 2 more module slots where an indicator can be equipped with only the features required for a given installation.
Ethernet (M4223) Standard
The R457 comes with M4223 Lua module as standard. This provides R457 Lua enabled functions such as Web servers, USB, Ethernet, etc.
The Ethernet Module provides 10/100 Base TX with auto negotiation (1 Raw bi-directional port and 10 Raw transmit only ports).
Robust Input/output Modules (M4301, M4311, M4321)
An R457 indicator can be equipped with up to 24 I/O. These I/O are electrically isolated, designed for direct connection into PLC’s and can drive low voltage actuators directly.
- Isolated high side (400mA current source) drivers are capable of driving low voltage actuators directly or can be connected directly with PLC controllers.
- Each module has 8 digital I/O ports which are limited to maximum input voltage of 30V and can drive up to 400mA.
- Direct connection between I/O points is supported.
- Inputs are isolated to resist against system noise.
Button Module (M4302)
The Button Module provides 4 voltage free inputs for use with switches or thumbwheels. The voltage free inputs eliminate the need to wire up complicate input driver circuits.
Isolated Communication Modules
Communication modules are in addition the built in RS232/RS485 ports on the R457 indicator.
- Fully isolated and recommended for application where there is a risk of lightening or surges or where additional communication ports are required.
- M4201 RS232/RS232, M4202 RS232/RS485, M4203 RS485/RS485
Precise Robust Analogue Output Module (M4401)
The analogue module provides a 4-20mA or 0-10V analogue output and two digital I/O.
- Isolated to resist against system noise and interference therefore reducing unnecessary callouts;
- Precise with a 400Hz (2.5msec) update rate and 1/65,000 resolution. The fast update and high D to A conversion rate give a smooth output curve which helps a PLC to see more realistic readings (2.5msec step)
- Scalable to suit the input on the PLC.
- Two digital I/O provided the same as the M4301
Data Storage Device Module (M4501)
- The Data Storage Module provides nonvolatile alibi memory storage (6M bytes) according to WELMEC 7.2 L. Compatible with later versions of software.