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81503D_MHW_400-401_12-2010_ENG
Graphic symbols used
To distinguish between the type and importance of the information provided in these instructions for use, graphic
symbols have been used as a reference to make interpreting the information clearer.
Indicates the contents of the various manual sections,
the general warnings, notes, and other points to
which the reader’s attention should be drawn.
Indicates a particularly delicate situation that could
affect the safety and correct working operation
of the controller, or a rule that must be strictly
observed to avoid dangerous situations
Indicates a condition of risk for the safety of the
user, due to the presence of dangerous voltages
at the points shown
Indicates a suggestion based on the
experience of the GEFRAN Technical Staff,
which could prove especially useful under
given circumstances
Indicates a reference to Detailed Technical
Documents available on the GEFRAN web
site www.gefran.com
1 • PRELIMINARY INSTRUCTIONS
This section contains information and warnings
of a general nature which should be read
before proceeding with controller installation,
configuration and use.
General Description
Microprocessor controller, format 48x48 (1/16 DIN)
manufactured using SMT.
The instruments provides a complete operator interface,
protected by a Lexan® membrane that ensures level
IP65 faceplate protection.
They have 4 keys, 4 digits display, 2 indicating LED’s
for 400 model, 3 indicating LED’s for 401 model and a
further 3 LED’s bar-graph.
The main input for the process variable is universal and
provides the possibility to connect many types of input
sensor:
• Thermocouple type J, K, R, S, T, B, E, N
• Resistance thermometer PT100 3-wires
• Thermistor PTC
• Linear inputs 0...60mV, 12...60mV,
0...20mA, 4...20mA, 0...10V, 2...10V
The type of input is selected from the faceplate keys and
no external shunts or adapter are required.
Model 401 can have an auxiliary input for a 50mAac
current transformer to monitor the load current.
It is also possible to set an alarm point related to the
current transformer input in order to check eventual load
malfunction.
The instruments have 2 (3 for 401 model) relay
(5A/250Vac, cosϕ=1) or static (10Vdc/30mA) outputs
with Heat, Cool or Heat/Cool and/or alarm function.
All the programming procedures of the instruments are
facilitated by the grouping of the parameters in function
blocks (CFG for the control parameters, Inp for the
inputs, Out for the outputs, etc.) and by the possibility
of selecting a simplified menu for entering the most
frequently used parameters.
To simplify the configuration even further, a
programming kit is available for PC, which includes a
menu driven configuration program for Windows and
the necessary cable to connect the instrument (see
technical data code WINSTRUM).
A configurable personal software protection code
(password protection) can be used to restrict the levels
of editing and displaying the configuration parameters.
Electrical Interface
All connection terminals (power supply, inputs, outputs,
options) are grouped together on the back of the
instrument.
For technical specifications and performance details refer
to Section 13 “Technical Specifications”.
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