Gefran 1600V, 1800V Data Sheet

1600V / 1800V

CONTROLLER for MOTORIZEDVALVES

Main applications

• Ovens

• Processing plants for chemical

and pharmaceutical industries

• Food processing plants

• Sterilizers, autoclaves,

continuous ovens and drying
unit ceramics and bricks

Main features

• Universal input configurable from the
faceplate

• Acquisition of the input signal every
120msec ; resolution 30000steps

• Two control outputs: relay, logic or
analogue with Open/Close valve
function

• 3 configurable alarms

• 2 analogue outputs (retransmission)

• 2 digital inputs with configurable

function

• Auxiliary input for valve position
potentiometer feedback

• Heater Break or shortcircuit probe
alarm

• Self and Auto-tuning, Soft-start,
Local/Remote setpoint, Auto/Man

• Multiset function, timer set ramp

GENERAL

Microprocessor controller for three-step
motorised valves, 48x96 / 96x96 (1/8DIN

- 1/4DIN) size.
Manufactured using SMT, the instrument
provides a complete operator interface,
protected by a Lexan membrane that
ensures level IP65 faceplate protection.
It has 4 keys, two green LED displays,
each with 4 digits, 4 red indicating LED’s
for the 4 logic or relay outputs, and a
further 3 LED’s that are programmable to
indicate the various operational states of
the instrument.
10 led red bargraph indication can be
associated with analogue outputs for
control, inputs, deviations or valve
position.
The main input for the process variable is
universal and provides the possibility to
connect many types of input sensor:
thermocouple, resistance thermometer,
thermistor, linear inputs, potentiometer, all
with the possibility of custom linearisation
that can be defined using the faceplate
keys.
The type of input is selected from the
faceplate keys and no external shunts or
adapter are required.
It is possible to activate correction of the
input using a linear function defined by
way of two points on it.
A second auxiliary isolated analogue

input is available, which can also be
configured for a linear input or,
potentiometer for valve position feedback.
It is possible to configure the 2 available
isolated digital inputs for selection of up
to 4 local setpoints; start, stop and reset
of internal timer; Auto/Man, Loc/Rem
functions; alarms memory reset; input
hold function.
This instrument has up to 4 relay (3A,
250V) or logic (12Vdc, 20mA) outputs, 2
of which will be dedicated to the
open/close valve functions and up to 2
isolated analogic outputs, in voltage or
current.
Every output function is configurable from
keypad; available functions are control
output (open/close valve); alarm output;
timer controlled output; digital input
repetition; retransmission of process
value, setpoint, deviation, alarm setpoint
or value read from digital communication.
A further isolated output (10 or 24Vdc,
30mA max.) is available for powering
external transmitters or potentiometers.
The serial communication interface
RS485 (RS232C compatible) makes it
possible to read or modify any parameter
and to govern the instrument online
(local/remote manual/automatic
commutation, internal timer control, direct
control of outputs).
Protocols available: MODBUS RTU and

CENCAL (Gefran).
Using these protocols it is possible to
write to any of the instrument parameters.
Specific parameters are present for the
valves control, i.e. the actuator stroke
time, the minimum pulse time, the
impulsive intervent threshold, the dead
zone; also the control type is configurable
with or without potentiometer feedback;
with PD or PID algorithm.
All the programming procedures of the
instrument 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.
The instrument can also select the
parameters to display depending on the
hardware configuration, automatically
hiding those that are not influential.
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 data sheet cod.
WINSTRUM).

TECHNICAL DATA
INPUTS

Accuracy 0,2% f.s. ±1digit.
Acquisition of the input signal 120msec.
Decimal point position for linear groups
can be set freely.
For inputs from TC , RTD, PTC a decimal
figure in the maximum display field
(-199,9...999,9).

TC - Thermocouples

J (Fe-CuNi) 0...1000°C / 32...1832°F
K (NiCr-Ni) 0...1300°C / 32...2372°F
R (Pt13Rh-Pt) 0...1750°C / 32...3182°F
S (Pt10Rh-Pt) 0...1750°C / 32...3182°F
T (Cu-CuNi) -200...400°C / -328...752°F
B (Pt30Rh-Pt6Rh) 44...1800°C / 111...3272°F
E (NiCr-CuNi) -100...750°C / -148...1382°F
N (NiCrSi-NiSi) 0...1300°C / 32...2372°F
(Ni-Ni18Mo) 0...1100°C/ 32...2012°F
L-GOST (NiCr-CuNi) 0...600°C / 32...1112°F
Custom -1999...9999

RTD 3-wires

Pt100 -200...850°C / -328...1562°F
JPt100

(JIS C 1609/81) -200...600°C/

-328...1112°F

Custom -1999...9999
PTC (alternative to RTD)

-55...120°C / -67...248°F
Custom -1999...9999

DC - Linear

0...50mV; 10...50mV; 0...20mA

4...20mA; 0...10V; 2...10V

Auxiliary input

(insulation 1500V)
For Remote Setpoint:

(0...10V, 2...10V, Ri=1MΩ)

(0...20mA, 4...20mA, Ri=5Ω)
Valve position potentiometer feedback:
> 500Ω

Logic inputs

Insulation 1500V
NPN 24V/4,5mA (PNP 24V/3,6mA)
Configurable function: Man/Auto,
Loc/Rem, Alarms Reset,Hold, timer
stop/start/reset, Setpoint selection.

OUTPUTS

Outputs fully configurable for open/close
valve function, single alarm, “OR” or
“AND”, of more alarms logic input repetition

Relay

with rating: 5A/250V, cosϕ=1
(order code: R)

Logic

11Vdc, Rout=220Ω (20mA, max.6V)
(order code: D)

Analog retransmission

isolated 1500V

- Up to 2 analogue outputs for control or
retransmission (input signal, setpoint,
auxiliary input, valve position, alarm
setpoint).

- Scale range selectable from keyboard.

- Configurable output 0...10Vdc; 0/4...20mA

- Resolution 4000 steps

SERIAL LINE

Optoisolated 4-wires
Passive Current Loop configurable (1200
baud) interface, RS232 and RS422/485
(1200, 2400, 4800, 9600, 19200 baud).
Protocol: GEFRAN CENCAL or MODBUS

POWER SUPPLY

Standard: 100 to 240Vac/dc ±10%
on request: 20 to 27Vac/dc ±10%
50/60Hz; 12VAmax.
Protection by internal fuse not serviceable
by the user

TRANSMITTER SUPPLY

isolated 1500V

10/24Vdc max. 30mA, short circuit
protection

AMBIENT CONDITION

Working temperature range: 0...50°C
Storage temperature range: -20...70°C
Humidity: 20...85%Ur non condensing

Control

P, PD or PID for motorised valve (with or
without potentiometer feedback), for
heating/cooling with parameters
configurable from the faceplate.

• Proportional band 0,0...999,9% f.s.

• Integral time 0,0...99,99 min

• Derivative time 0,0...99,99 min

• Max and min control output power

limitation 0,0...100,0%

• Manual reset -999...999 digit

• Power reset -100,0...100,0%

• Cycle time 0,1...200sec

• Minimum pulse time / Actuator stroke

time 0,0...25,0%

• Pulsating control band in percentage of
actuator stroke time 0,0...1000,0%

• Dead band (symmetrical around control
Setpoint), settable in percentage of f.s.
0,0...25,0% f.s.

Alarms

- Up to 3 alarms, settable as absolute,

deviation or symmetrical deviation alarm
with respect to the control setpoint with
configurable function (Hi or Lo).

- The alarm point may be set anywhere

within the configured scale.

- Heater Break Alarm

- Loop Break Alarm

- Alarm Hysteresis configurable

- Alarms can be assigned to main input,

auxiliary input or control SP.

WEIGHT

400g (1600V); 600g (1800V) max
complete version

A - PV Display: process variable
B - SV Display: setpoint value
C - “Function” key
D - “Lower” key
E - “Raise” key
F - “Automatic/Manual” selection
G - Function indication
H - Indication of active outputs

Double green LED display (4 Digit)
Faceplate protection IP65

FACEPLATE DESCRIPTION

F

E

D

C

G

H

B

A

F

G

A

H

B

E

D

C