Gefran 3850T Data Sheet

3850T

MULTIFUNCTION CONTROLLER

Main features

• Operator interface with color touch
screen display, 7”

• Up to 16 PID control loops

• Cascade, ratio and valve PID controls

• Profile programmer with ramps and re­tention; synchronous and asynchronous

• Up to 250 Programs with 50 segments

• 3 password protected user levels

• Energy meter (kWh)

• Configurable logic operations

• Configurable math functions

• Data Log with Real Time Clock

• Batch Report management

• Open format files (CSV) or encrypted for
DataLog and production batches

• Setting up custom pages

• Active and historical alarm management

• USB for data export and parameter
cloning

• Control parameter advanced tuning

• Configurable analogue and digital I/O
signals

• HMI/SCADA/PLC data exchange via
Ethernet Modbus TCP

• Message language selection

PROFILE

The 3850T multifunction controller is
designed to control the temperature in
production processes (heat treatment,
kiln and autoclave management, etc.)
used in different industrial sectors such as
automotive, food, metalworks, etc.

The controllers consist of three elements:
the operator interface with touch screen
display and keys, the I/O module group for
connection to plants and machinery and the
connection cable between the interface and
the module group.

The color touch screen display 7” allows
the operator to easily and quickly interact
with the controller, managing actions and
parameters.
Access to the main controller functions and
navigation between pages is made easier
thanks to its 10 function keys, some of
which are customisable.
Customized pages may be configured
directly on the display, even without a PC
or external software. This option allows
you create optimised graphic interfaces
to control the machinery used. A graphic
symbol library is provided for this purpose
(buttons, bargraph, data display, etc.) that
can be set and linked to the controller
variables. You may also import images,
such as representations of the machinery

or of the system’s operating diagram, to
be used as a background, to make control
even more intuitive for operators.
The controller can manage up to 16 PID
loops, fully configurable. Each PID can be
used as a control for a single loop, a valve
or a ratio control, it can be connected to
the profile programmer or be used as a
cascade controller.
Tuning is performed through advanced
algorithms that ensure stable and accurate
temperature control, avoiding exceeding
set limits or having unstable process
control even in critical heat or fast motion
processes.

The setpoint profile programmer allows
you to set the programs to manage heat
treatment cycles. The profile is the set of
segments that describe the setpoint curve.
You can create up to to 250 programs,
stored internally, each of which can contain
up to 50 segments.
Each program lets you set up to four setpoint
profiles. A descriptive message, 16 input
events (IN), 16 outbound events (OUT), the
setpoint value and the HBB alarm threshold
can be set for each program.
You can launch up to 8 programs
simultaneously, each of which can handle
up to 4 synchronous profiles.
The profile programmer can be set in
synchronous mode (all profiles are run with

a common time base) or asynchronous
(each profile can be run with an independent
time base). The asynchronous mode is
obtained by running different programs
simultaneously.

The available logical operators (AND, OR,
Timer, Counter etc.) allow you to create
custom logic operating sequences with
the PID, thus obtaining complete and
flexible machine control.
The available settable mathematical
functions (addition, multiplication,
division, minimum or maximum value,
algorithms, etc.) can be used associated
with process values as analog channels
and virtual channels, to manage advanced
controls, such as ratio controls or custom
mathematical formulas.

The Data Logger function, combined
with the Real Time Clock (RTC clock with
rechargeable buffer battery) stores process
data, IN/OUT signals and the status of
the alarms in an open file (.CSV format) or
encrypted file. The minimum data sampling
frequency is 1 second. Saved files can then
be exported from the controller via USB or
Ethernet network.
The batch report option lets you to
associate this data with a specific batch
produced, to be able to use them in
production and quality reports.

A specific application for PC (Report
Utility) is available for easy management
of all data logger data and the production
batch reports which allows you to copy and
delete files via an Ethernet network between
the controller and a PC, manually by the
operator or automatically at configurable
time. The data stored on the PC can then
be displayed in graphical format or a
spreadsheet (Excel type) or exported as
CSV or PDF files.

For the quick and safe installation of
the machinery or plant, use the recipes
stored in the controller. The recipes, easily
retrievable by the operator, can be of two
types: OEM manufacturer recipes, which
contain the machine setup parameters and
production recipes, which contain single
production settings (profile program, logical
steps, math functions).
The recipes can be easily transferred
between different controllers via USB key
or Ethernet network.

Controllers offer complete diagnostics
(probe break down or incorrect connection,
total or partial load break down, control loop
faults), which helps the operator in case of

controlled machine or process faults.
All controller alarms are stored internally
and can be viewed as Active alarms and
Historical alarms. The relevant message is
displayed for each historical alarm with the
date and time of the various states (active
alarm, ACK, and alarm cleared). The ACK
parameter, settable for each alarm, ensures
that the active alarm was acknowledged by
the operator.
An internal energy counter, with
configurable offset alarm, provides energy
consumption and cost totals.

For accurate time stamps, the controller
supports the Simple Network Time Protocol
(SNTP) service, which continuously
updates the controller’s date and time from
the SNTP server connected via Ethernet
network.

The weekly clock function lets you
automatically start or stop a programmer
or a process, without the need of operator
intervention.
The clock is based on a settable weekly
calendar (day of week and time).

The display language selection lets the

operator interact with the device in the
preferred language, facilitating work.

Secure access to all controller parameters is
guaranteed by 3 preconfigured password
levels (Operator, Maintenance technician
and OEM manufacturer). In this way, each
user can only access the assigned functions
and parameters.

You can connect the controller to the factory
HMI/SCADA network by using standard
Modbus TCP (Ethernet) connectivity.

Complete controller configuration is
facilitated by use of the PC programming
tool GF_express, which proposes intuitive
Wizard pages, permitting easy construction
of customized graphic pages and advanced
logic.

DISPLAY AND KEYS

1

2

3 14

4 5 6 7 8 9 10 11 12 13

Figure 1 - 3850T display and key description

1. Shortcut icon (the landing page depends on the option
chosen):

• Controller with PROGRAMMER option: go to the

Program Monitor page that displays main program
information and lets you manage its execution.

• Controller with RECORDER option: go to the Trend

page that displays the set variable trends in graphic
format.

2. Lighted pressed key conformation.

3. Date and time indication.

4. Home page key: return to the main menu.

5. Left Page key: changes the page in the submenus with
multiple pages.

6. Right Page key: changes page in the submenus with multi­ple pages.

15

7. Group Page key: go to the higher menu level.

8. Back key: return to the previous page.

9. Custom Page 1 button: go to first custom page.

10. Custom Page 2 button: go to second custom page.

11. Customizable Key Function 1: raise the digital variable
FUNCT_1.

12. Customizable Key Function 2: raise the digital variable
FUNCT_2.

13. Customizable Key Function 3: raise the digital variable
FUNCT_3.

14. Authenticated user indication. The login page opens by
touching the indication.

15. Alarm Icon: blinks to indicate an alarm; tapping the icon
opens the page that lists current alarms.

HARDWARE ARCHITECTURE

DIMENSIONS AND DRILLING TEMPLATES

59.2 6.6

22.4

88

134.4

93.3

198

52.4

3850T

187.5

Foro

124

Dimensions in mm

I/O MODULE DIMENSIONS

I/O 2 SLOT

I/O 4 SLOT

119,8

119,8

109,5109,5109,5

52

1

2

3

4

5

1

PWRERR RUN

6

6

7

8

9

9

5

10

11

12

C

D

B

E

13

A

F

9

0

8

14

1

1

7

2

6

3

5

4

15

C

D

B

E

A

16

F

9

0

8

131

17

7

2

6

5

4

18

GATEWAY CAN bus

19

1 2
4

20

3

F-GCANs

F-MIX

104

1

1

2

3

4

5

1

PWRERR

6

6

7

RUN

8

9

9

5

10

11

12

C

D

B

E

13

A

F

9

0

8

14

11

7

2

6

3

5

4

15

C

D

B

E

A

16

F

9

0

8

1

1

17

7

2

6

3

5

4

18

GATEWAY CAN bus

19

20

2
314

F-GCANs

F-MIX

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

F-EU16F-MIX

I/O 8 SLOT

Dimensions in mm

119,8

208

1

1

1

2

2

3

3

4

4

5

1

PWRERR

6

RUN

9

5

C

D

B

E

A

F

9

0

8

1

1

7

2

6

3

5

4

C

D

B

E

A

F

9

0

8

1

1

7

2

6

3

5

4

GATEWAY CAN bus

21

4

3

F-GCANs

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

F-MIX

F-MIX F-MIX F-EU16F-EU16F-MIX

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

I/O MODULE COMPOSITIONS

Composition Mod.

Standard

1

2 4 2 8 8 22 3850T-xx-04-xx-xx-xx-xx-xx-00-x-x

4 8 4 16 16 44 3850T-xx-08-xx-xx-xx-xx-xx-00-x-x

4 12 6 24 24 66 3850T-xx-12-xx-xx-xx-xx-xx-00-x-x

8 16 8 32 32 88 3850T-xx-16-xx-xx-xx-xx-xx-00-x-x

4 4 2 16 16 38 3850T-xx-04-xx-xx-xx-xx-xx-08-x-x

4 8 4 24 24 60 3850T-xx-08-xx-xx-xx-xx-xx-08-x-x

8 12 6 32 32 82 3850T-xx-12-xx-xx-xx-xx-xx-08-x-x

8 16 8 40 40 104 3850T-xx-16-xx-xx-xx-xx-xx-08-x-x

Analog Digital

IN OUT IN OUT

Tot.

I/O

3850T code

4 4 2 24 24 54 3850T-xx-04-xx-xx-xx-xx-xx-16-x-x

with additional digital expansions

8 8 4 32 32 76 3850T-xx-08-xx-xx-xx-xx-xx-16-x-x

8 12 6 40 40 98 3850T-xx-12-xx-xx-xx-xx-xx-16-x-x

8 16 8 48 48 120 3850T-xx-16-xx-xx-xx-xx-xx-16-x-x

Notes

1) Container dimensions in modules
n/a = composition not available

TECHNICAL SPECIFICATIONS

3850T controller

OPERATOR INTERFACE

DISPLAY

KEYBOARD

CONTROL FUNCTIONS

LOOP

(Regulation)

SETPOINT PROGRAMMER

Type TFT Touch Screen with 4-wire resistive type technology

View area

Lighting Back lit with LED, duration 50.000 hours @ 25 °C (77 °F)
Resolution (pixel) 800 × 480 (WVGA)
Colors 262,000
Max brightness 240 cd/m
Contrast 1000:1

View angle

Type

PID

Regulation type

Control output

Valve control

Sampling time 25 ms
Tuning Automatic Self Tuning algorithms.

Alarms

Programmer type

Program profile From 1 to 4 synchronous profiles

Program

Segments

IN profile events

OUT profile events

Simplified configurability

HBB alarm

Diagonal: 7”
Dimensions (L × H): 152 × 90 mm (5.98” x 3.54”)

2

Horizontal: 60°
Vertical: +45° ... -60°
Number of keys: 10 (of which 3 programmable)
Type: mechanical

Single loop; Cascade (2 consecutive PID: PID1-PID2, PID3-PID4
…); Ratio; Valve
Number: 16 max
Parameter groups: 10 max
PID
ON/OFF
Single action heat or cool
Double action heat or cool
Type: continuous (0... 100%) or ON/OFF with PWM modulation.
Cycle time: constant or optimised (Burst Firing)
Open/close for floating type motorized valve
Open/close for motorized valve with feedback (potentiometer
position control)

Number: max 4 associated with each PID
Type: maximum, minimum, symmetric, absolute/relative
Synchronous and asynchronous setpoint programs
Single-segment setpoint or ramp + maintenance profile
Integrated function blocks

Max number of programs: 250
Maximum number of programs running at the same time: 8
Available commands: START, HOLD/PAUSE, RESET, END, SKIP
Status outputs: RUN, READY,END, HOLD
Setting: time segments (dd:hh / hh:mm / mm:ss) or gradient con­figuration
Maximum number of segments per program: 50
Maximum number of ramps and holds per program: 100 (50 ram­ps - 50 holds)
High/low limit threshold configurable for each segment
PID group activation for each segment
Max number of settable IN events: 16
Acknowledged events: digital IN-resource, digital OUT, system
merker
Max number of settable OUT events: 16
ON/OFF while running the profile segment
Events acknowledged: digital OUT resource, logic operation,
programmer status
Template
Configuring and running the same program on several PIDs simul­taneously
Alarm range configuration per single segment
High/low range setpoint

GETLogic

DATA LOGGER

PRODUCTION REPORT

(Batch report)

Scope Sequential execution of logical and mathematical instructions
Running sequences 1 for each program (max 8) + 1 global always active
Function blocks Max number per program: 200

AND, OR with default logic patterns

Logic function blocks

Timer function blocks

Counter function blocks

Basic mathematical function
blocks

Special mathematical function
blocks
Special mathematical function
blocks
Process function blocks F0 (sterilisation coefficient)
Resources for mathematics
operators
Resources for logical operators Digital In/Out, Alarm Status, System Merker
Scope Continuous configured data recording

Recordable values

Sampling

Data storage

Graphic display

Scope Synchronous recording when running the program profile

Recordable values

Sampling

Data storage

Graphic display

Set/Reset, Reset/Set
Rising edge, trailing edge
Excitation delay timer (TON)
De-energising delay timer (TOFF)
Flip/flop timer
Increasing counter
Decreasing counter
+ , - , × , : , average, minimum value, maximum value, square root,
base 10 logarithm, natural base A logarithm, and raised to the
power A, A raised to the power B
Max peak, minimum peak, hold of a value, average of 2 values,
minimum/maximum limit of a value
Selection between two values Greater/Lesser/Equal/Greater­Equal/Lesser-Equal/Different

Analog IN/OUT, SP controller, System Log/Real data

Max number of analog values: 50
Max number of digital events: 50
Sampling interval: 1 s ... 1 h
Sampling mode: single record with time information (date/time)
and values /events/actions detected
Closing the sequential log file: automatic every hour/day/week
(configurable)
File format: CSV
Data file encryption: optional
Log file name with close date/time indication
Storage media: internal memory
File export: manual via USB key or manual/automatic via Ethernet
via Gefran - DataLog Utility PC application

- Report Utility

Graph: stored log data trend
Max number of viewable curves: 8
Data selection by association: 8 curves
Single curve scaling
Available functions: enable single curve, full scale selection, zoom
+/-, scroll +/- and cursor

Max number of analog values: 50
Max number of digital events: 50
Batch name/description (selectable)
Running profile data (selectable)
Sampling interval: 1 s ... 1 h
Sampling mode: single record with time information (date/time)
and values /events/actions detected
File format: CSV
Data file encryption: optional
Log file name with close date/time indication and Job ID reference
(optional)
Storage media: internal memory
File export: manual via USB key or manual/automatic via Ethernet
via Gefran - DataLog Utility PC application

- Report Utility

Graph: stored log data trend
Max number of viewable curves: 8
Data selection by page: 8 curves
Single curve scaling
Available functions: enable single curve, full scale selection, zoom
+/-, scroll +/- and cursor

TREND GRAPH

PROGRAM RECIPE

CONFIGURATION RECIPE

GETView

WEEKLY CLOCK

Scope Continuous recording of data configured without archiving
Recordable values Max number of values: 24

Max number of viewable curves by page:8
Number of samples: 5,000

Graphic display

Data file

References Descriptive name and ID code (easy loading and activation)
Data import and export Via USB key

Types

Data import and export Via USB key
Scope Configure custom graphic pages directly from the controller panel
Number of customisable pages 10 max

Components

Available functions

Image functions

Scope Event (ON/OFF) on a weekly or daily basis

Function

Number 4 max

Single curve scaling
Available functions: enable single curve, full scale selection, zoom
+/-, scroll +/- and cursor
Programmer profile segment/event configuration
Synchronised programmer logic operations
Synchronised programmer mathematics functions
DataLog/Batch data configuration

System: number of clocks, home page, program modes ...
PID: all single PID configuration parameters
GETView: custom page configuration
InOut: analog channel range, decimal point configuration, unit of
measure configuration
Messages: custom text list

Available types:

• Led: digital variable with color/text/image change

• Notes: default text display

• Text: fixed text display

• Edit text: text view and edit

• Progress: display a value as a bar (vertical/horizontal)

• Data display: display of a numeric value

• Data edit: view and edit a numeric value

• Button: change the status of a digital value with status di­splay (color/text/image) and change mode selection (momen­tary/toggle)

• System: page change function with default list selection

Maximum number of components of the same type per page:

• Text (Note, Text, Edit text) and numerical (Display date, Edit
date): max 40

• Key: max 20

• LED: max 20

• Progress: max 16

• Image: max 10

• System: max one link of each type

Add a new component
Edit component parameters
Delete a component
Move a component
Multiple component selection for move or delete
Align multiple components left
Align multiple components top
Image conversion tool from the most popular graphic file formats
Image file import and export via USB key

Configure ON/OFF event status by single day of the week
Event time settings in hh:mm
Enable the weekly clock
Enable weekly repetition