Communication with the modules is
RS485 (2 wire, half duplex connection). A choice of
Modbus and ANSI X 3.28 protocols is available which
allows these instruments to be simply connected to a PC
The system comprises a dual
channel basic module which provides power and
communication for up to 30 additional dual loop
The SRV system features a ±0.3%
of process value accuracy.
The SRV control system features
Brilliant PID with autotuning. Brilliant PID
allows an optimum response to both setpoint and process
Low Power Consumption
The SRV system features a new
design of power supply and control circuit requiring
only 21 Watts of power for a 20 channel system. Energy
consumption is kept low and the generated heat inside
the control panel is reduced.
Two alarms are provided as
standard. Temperature, process or deviation and loop
break alarm may be selected. Alarm output is provided
by communications data and the optional event output
Heater Break Alarm
In the event of heater failure
this option provides an alarm output within the
communication data. A matching current transducer,
available from TC Ltd., is required for this option.
A wide range of thermocouple,
resistance thermometer, voltage and current inputs are
Relay, SSR, voltage and current
outputs are available for heat and heat/cool action.
Safe and Easy to use
The modules are powered by a 24V
DC supply and hinged terminal covers are supplied as
standard. The interleaved terminal arrangement provides
easy access for wiring.