Gefran 600 OF Data Sheet

Main applications

• Small industrial ovens

• Pipe welders

• Temperature control units

• Dryers

• Climatic cells and test benches

• Control panels with membrane
keyboard

600 OF

“OPEN FRAME” CONTROLLER

Main features

• Universal input configurable from faceplate

• Accuracy better than 0.2% f.s. under nominal
conditions

• Up to 5 outputs, relay, logic, for control,
alarms

• Hot/cold function with selection of cooling
liquid

• 3 alarms with completely configurable
function

• Software alarm for load interrupt or probe in
short circuit (LBA)

• Self-tuning, Auto-tuning, Soft-start, bumpless
Man/Auto function

• Double set, set ramp, timed output function

• Setpoint programmer functions with 3
configurable steps

• Configurable internal buzzer

• Optically isolated RS485 serial
communication, protocol: MODBUS RTU

• Self-diagnosis

• Panel mounting

• Screw connections with removable terminals

PROFILE

Microprocessor controller, format 44x91
(1/16 DIN) manufactured using SMT.
Provides a complete operator interface. It
has 4 keys, two green LED displays, each

with 4 digits, 4 red signal LED’s for the 4

logic or relay outputs, and 3 other program­mable LED’s to signal the various operatio­nal states of the instrument.
Can be connected to an external keyboard
for custom solutions.
The main input for process variable is uni­versal, and many types of signals can be
connected: thermocouples, resistance ther­mometers, thermistors, normalized linear
inputs, all with possibility of custom lineari­zation using the faceplate keys. The type of
input is selected from the faceplate keys; no
external shunts are required.
Control functions are selectable from classic
mode or from setpoint programmer mode
with 3 settable steps.
With the isolated digital input you can select:
one of the two presettable setpoints, select
Manual-Automatic mode, reset the alarms
memory, or enable the hold function.
The instrument can have up to 5 outputs:
relay (5A at 250Vac/30Vdc cos_= 1) or
logic 15V ±10% (12V min at 30mA). The
function of each output is freely configurable
from the faceplate keys. In addition to con­trol and alarm outputs, you can have outputs
that repeat the state of the digital input and
values alarm limits acquired from serial line.
Another output (±15Vdc 20mA max.) is avai-

lable to power external transmitters.
The serial communication option (available
in RS485 standard) allows connection to
supervision systems and PLCs with the
MODBUS RTU protocol. Instrument pro­gramming is facilitated by grouping para­meters in functional blocks (CFG for control
parameters, Inp for inputs, Out for outputs,
etc.).
The instrument can also select display para­meters based on hardware
configuration, automatically masking irrele­vant parameters. The instrument is supplied
with an “EASY” configuration with just a few
parameters (only those for the model orde­red and essential for controller operation).
In this way, you just have to set the setpoint
and alarm, and launch selftuning from the
button.
The 600OF does all the rest.
A PC programming kit is available for even
simpler configuration, composed of a cable
and a guided program for Windows envi­ronment (see data sheet code WINSTRUM).
Compact “Open Frame” mechanical struc­ture makes the 600OF easy to use even on
small panels and housings.

TECHNICAL DATA

INPUTS

Accuracy 0,2% f.s. ±1digit.
Sampling time 120msec.

TC - Thermocouple

J 0...1000°C / 32...1832°F
K 0...1300°C / 32...2372°F
R 0...1750°C / 32...3182°F
S 0...1750°C / 32...3182°F
T -200...400°C / -328...752°F
custom -1999...9999

(B, E, N, L-GOST, U, G, D, C, etc.)

RTD 2/3 wires

PT100 -200...850°C / -328...1562°F
JPT100 -200...600°C / -328...1112°F

PTC

990Ω, 25°C -55...120°C / -67...248°F

NTC

1KΩ, 25°C -10...70°C / 14...158°F

DC - Linear

With scale settable from:-1999...9999

0...60mV / 12...60mV

0...10V / 2...10V

0...5V / 1...5V

0...1V / 0,2...1V

0...20mA / 4...20mA
Input impedance:

Ri > 1M _ for 60mV,1V
Ri > 10K _ for 5V, 10V
Ri = 50 _ for 20mA
32-segment custom linearization can
be inserted.

Digital input

Ri = 4,7K. (24V, 5mA) insulation 1500V
or no-voltage contact.
Function configurable for man/auto
selection, local/remote (setpoint from
serial line, setpoint1/setpoint2; Set/reset
outputs, start/stop functions from tuning,
software on/off, reset alarms memory,
hold.

OUTPUTS

5 configurable outputs:

• OUT1 available in relay or logic

• OUT2, OUT3, OUT4: relay only

• OUT6: logic only
Freely assignable to control functions and
single alarms in “OR” or “AND”. Can be
slaved to front panel key or aux. digital
input.

Relay

With contacts: 5A at 250Vac/30Vdc,
cos_=1

Logic

15Vdc ±10% (12V min a 30mA)

POwer SUPPly

1100...240Vac ± 10%; 50/60Hz, 8VA max.
Protection by internal fuse not serviceable
by user

TraNSmITTer POwer SUPPly

+15V ±10% non-stabilized, 20mA max
Short-circuit protection

ambIeNT cONdITION

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

cONTrOl

On/Off, P, PD, PID for heating and coo­ling, with parameters settable from keys.
Cooling setpoint relative to heating
setpoint.
Setpoint programming function with 3 pro­gram steps settable with times from 0.0 to
99059 minutes

• Manual reset -999...999 digit

• Power reset -100,0...100,0%

• Cycle time 0...200sec

• Softstart 0,0...500,0 min

For each action:

• Proportional band 0,0...999,9% f.s.

• Integral time 0,0...99,99 min

• Derivative time 0,0...99,99 min

• Max power limit 0,0...100,0%

• Hysteresis settable for each alarm

• Alarm assigned to current input with
different operating modes.

weIghT

160g in complete version

Buzzer (Output 5)

Settable signal type

External keyboard

5 pin connector for 4 external keys

Serial line

Isolated RS485
Protocol: MODBUS

FACEPLATE DESCRIPTION

A – Indication of process variable (PV), green digits height
10mm

B – Indication of setpoint (SV), green digits height 7mm
C – “Function” key
D – “Lower” key
E – “Raise” key
F – Auto/Man selection
G – Function indicators, red LEDs
H – Indication of output states, red LEDs

alarmS

• 3 alarms settable as absolute, deviation,
symmetrical deviation to setpoint with
direct or reverse function.

• Alarm point can be set anywhere on
selected scale

• Alarms can be masked with exclusion at
power-on, with memory, with delayed trip

• LBA alarm for setting control

G

H

A

B

F E D

C