Gefran 2500 Data Sheet

PROFILE

Single-loop microprocessor controller, 96
x 96 (1/4 DIN) format, appropriate for pro­cesses with high variation speed.
Thanks to its extended functions and con­figurable hardware and software, it provi­des high applicative flexibility in systems
that control and monitor pressure, force,
temperature, and differential pressure,
and can acquire up to 4 variables.
It has two main analog inputs, configura­ble for strain gauge / potentiometer /
linear signal / TC / RTD (one of which is
optional) and two auxiliary analog inputs
for linear signals (for example, remote
setpoint functions and line speed referen­ce input).
Two isolated analog outputs (one of which
is optional) are available for control.
The operator interface, with IP54 protec­tion level (IP65 with protective cover) is
equipped with a 6-key soft-touch key­board, triple 5-digit display (one of which
is 2-color), and two bar graphs with confi­gurable function.
Controls and commands can be sent
from the front panel or via 4 digital inputs
that can be assigned functions such as
reset, calibration, man/auto, loc/rem,

hold, raise/lower (motopotentiometer
function), parameter set selection, set­point selection.
The instrument has 4 configurable relay
outputs as standard.
More extended configurations are availa­ble with the following options:

- isolated analog output for retransmis­sion of process, peak, remote set, devia­tion, alarm setpoint, differential values

- expansion with 4 I/O

- communication interface Modbus RTU

- communication interface Profibus DP
(slave)

CONTROLLER

Self-adapting PI control or double-action
PID (heating/cooling), ratio controller, dif­ferential pressure controller, selftuning,
continuous or one-shot autotuning,
Auto/man, Loc/rem, setpoint gradient,
power gradient, dynamic power limits.
8 sets of selectable PID parameters
based on setpoint level / PV / deviation or
from digital inputs.

ALARMS

4 completely configurable alarm set­points.
Selectable “failsafe” function.

MATH FUNCTIONS

The 2500 controller lets you define two
distinct math relations between two ana­log inputs.
The results can be freely used as set­points, alarm setpoints, control output,
etc...

DIGITAL COMMUNICATION

The instrument offers an optional RS485
2/4 wire / RS232 serial interface with
MODBUS RTU protocol for access to
instrument parameters.

CONFIGURATION

The programming procedure is facilitated
by the menu structure, with various confi­guration levels for quick and simple data
search.

2500

HIGH PERFORMANCE CONTROLLER

Main applications

• Pressure controls on extrusion
and injection press lines for
plastics

• Differential pressure control

• Strength control on textile,

paper, plastic film production
lines

• Tension control on winding
stations

• Control process

Main characteristics

• Double configurable input for
strain gauge / potentiometer /
linear signal / TC / RTD

• Two auxiliary analog inputs

• Differential measurement

• High precision: 0.1 % f.s. ± 1 digit

• Automatic calibration for 6-wire

strain gauge

• Transmitter power supply and
strain gauge probe power supply

• PID controls with 8 sets of selectable
parameters

• 4 configurable alarms, failsafe function

• up to 3 isolated analog outputs for control

and retransmission

• 4 digital inputs

• 4 relay outputs with configurable function

• expansion with 4 configurable digital

inputs and/or outputs

• Serial communication interface:

- RS485/RS 232 MODBUS RTU protocol
(optional)

- Profibus DP Slave (optional)

• Front panel with three 5-digit displays and
two bar graphs

TECHNICAL DATA
O

PERATOR INTERFACE

Display: n. 3
Configurable from -19999 to 99999 with
settable decimal point
5 digits, 2 colors (R/G) 13mm
5 digits (G) 10mm
5 digits (G) 10mm

Bargraph: n. 2
with 10/20 red LEDs

Signal LEDs: n. 5 red
Keys: n. 6

ANALOG INPUTS

Accuracy:

0,1% f.s. ±1 digit (0,2% for TC)

Min. sampling time:

2 msec for main inputs
10msec for auxiliary inputs

Resolution:

• without filter: 100000 steps@2msec

• with digital filter (selectable):

100000 steps@20msec
100000 steps@100msec (50Hz)

Custom linearization:

• fixed intervals: 64 sections

• variable intervals: 32 section max.

• self-learning

INPUT 1, INPUT 2 main inputs
Strain-gauge:

350Ω
Sensitivity 1,5...4mV/V
Jumper power supply: 5/10Vdc 200mA

Potentiometer:

≥ 100Ω, Ri > 10MΩ @ 2,5Vdc

Linear DC:

±50mV...±10V, Ri > 1MΩ
0/4...20mA, Ri = 50Ω

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

RTD 2/3-wires
PT100 -200...850°C / -328...1562°F

int./ext. cold junction compensation

INPUT 3 (auxiliary)
Linear DC: 0...10V, 0/4...20mA, Ri = 50Ω

INPUT 4 (auxiliary)
Linear DC: 0...10V, 0/4...20mA, Ri = 50Ω

DIGITAL INPUTS

4 NPN/PNP inputs

Optically isolated 1500V
NPN (voltage-free contact)
PNP 24Vdc max 5mA
configurable type and function

DIGITAL EXPANSION I/O(OPT.)

4 PNP inputs and/or outputs

Isolated external power supply 24Vdc, ±25%
Input 24Vdc, 5mA
PNP output in external power supply
range, with short circuit protection via
PTC, max. 100mA.

ANALOG OUTPUTS

3 isolated outputs 1500V
0/4...20mA, max 500Ω or
±10V, min 500Ω
resolution higher than 0,03%
configurable type and function
Control

OUT CO1

Control OUT CO2 (optional)
Retransmission OUT W (optional)

Not available with option of Profibus com­munication

RELAY OUTPUTS

4 relay outputs

NO/NC contact (internally selectable)
5A/250Vac cosϕ = 1
configurable function

OUT1, OU2 with terminal C in common
OUT3, OU4 with terminal C in common

COMMUNICATION (OPT.)

Serial interface:
RS485 2/4-wires / RS232 optically isolated

Protocol: MODBUS RTU

Profibus DP slave

Protocol: Profibus DP VO (slave)

CONFIGURATION VIA PC

Configuration software for Gefran pro­ducts: Instruments, Drives; Sensors, Auto­mation.
Compatible with Windows 2000, XP, Vista.
CD-ROM with selectable Italian/English
language, with kit for PC-instrument serial
port connection.

CONNECTIONS

screws

POWER SUPPLY

100...240Vac/dc ±10%,

20...27Vac/dc ±10%,
50/60Hz; 20VAmax
Protection via internal fuse, not replacea­ble by operator.

PROBE POWER SUPPLY

5/10Vdc - 200mA, 2,5Vdc for potentiome­ters

TRANSMITTER POWER SUPPLY

24Vdc ±5% - 100mA

WEIGHT

700g

DIMENSIONS

96x96x167mm

ACCESSORIES

Front covers

standard Gefran (see catalog)
GF_eXpress Kit (GF_eXK-0-0-0)

Software on CD-ROM, complete with
RS232/TTL converter cables for PC and
Geflex connection.

DESCRIPTION FACEPLATE

A - Process variable display, digit height 13 mm, 2-color (green/red)
B - C - Data display, digit height 10 mm, green
D - Control output percentage indicator (red)
E - “FUNCTION” button
F - “LOWER” button
G - “RAISE” button
H - “MAN/AUTO” button
I - “CAL-RST” button
L - “PEAK” button
M - Alarm setpoint signals, MANR, REM, CAL, red LEDs
N - Deviation indicator, red LEDs

IP54 front panel protection (IP65 available)

C
D

M

FGE

ILH

A
B

N