
Function:
The RCI-400-FSK is a bi-directional remote
communication system that exchanges the status of 4
dry contact inputs and 4 analog inputs between a master
and remote unit. Both the master and remote unit have
inputs and outputs to allow remote monitoring and
remote control.
Since the master and remote units are connected via
leased telephone line, and hence are ‘always-on’, a
change in signal at one end is transmitted to the other
end with very little delay. This makes this unit ideal for
real-time monitoring of remote tanks, pumps, etc.
The bi-directional operation allows for control signals to
be sent back to the remote site to take action based on
the incoming monitored signal.
This unit may also be used as a remote unit in a multi-
remote system where the master is a multi-channel
device such as the RCI -800.
Connection:
Units are connected via a class 'C' line (Dial-up or
leased). Regular J11 Phone Jacks make for easy
installation. When connecting units on a PBX system
make sure it can accept analog modem transmissions.
Serial systems connect via standard modem cable.
Standard Features:
Bi-directional Communication using a Phone Line
Uses MODBUS Protocol for Reliable Data Transfer
4 Dry Contacts and 4 Analog Inputs
4 'C' Relay Contacts and 4 Analog Outputs
Uses Analog Half-Duplex Leased Telephone Line
No Calibration Required
Microprocessor Controlled for High Accuracy
Power: 117 VAC 50/60 Hz (Optional 24 VDC)
Built-in Overvoltage Protection on Telephone Line
High Noise Rejection
CSA and NRTL Approved (LR51078)
Specifications:
Transmission Medium: Analog Phone Line, Half-Duplex
BAUD Rate: 2400 BAUD
Transmission Output: -6dB max., -8dB typ.
Operating Temperature: -20 Deg.C. to +50 Deg.C.
Relay Contacts: 10A 1/8Hp @ 125VAC
6A 1/8Hp @ 277VAC
Power: 117 VAC, 60/50 Hz
(24VDC Available)
Enclosure: NEMA4X (NEMA12 available as an option)
Model: RCI-400-FSK
Leased-Line Remote Control Signal Interface
Page J03
Manufacturers of Process
Controls and Instrumentation