Description
Overview
Operator interface
Large LCD display with customization of plastic front panel color and logo.
Graphic display of power, output current or valve position.
Scrolling alphameric display of 25 messages (32 letters each), completely configurable and savable, in three languages.
Thanks to language selection and clear scrolling messages for diagnostics, alarms, and process state, the controller speaks the user’s language.
Control
Double loop, three configurable universal inputs for thermocouples, resistance thermometers, linear inputs. Aerospace and Automotive applications AMS2750/CQI-9 conformant.
Easy configuration
Guided configuration for manual-free programming, with a few essential parameters and on-line help messages.
Ability to clone configuration among controllers, even with power off and in the field, thanks to a mini portable configurator with Zapper battery.
Extended configuration, creation of work recipes, and firmware updates via PC and GF_eXpress software, even without powering the controllers.
Thanks to the smart configurator function, you obtain the required parameter recipe by answering a few simple questions.
Local configuration and operation with only four keys assigned to LEDs that serve as feedback for the pressed key and as guide to specify appropriate steps.
The initial parameters can always be reset, both from the keypad and from the GF_eXpress Software tool.
Diagnostics, preventive maintenance and energy monitor
Complete diagnostics for broken or incorrectly connected probe, total or partial load break, out of range variables, and control loop faults.
Thanks to the switching count and to the settable alarm thresholds, you can program preventive maintenance to replace worn actuators.
An internal energy counter with alarm for abnormal variations totalizes energy consumptions and costs for constant control.
Function block applications 32 AND, OR, Timer Function Blocks let you create customizable logic sequences for complete and flexible machine control.
The controller’s hardware resources are exploited completely, without any need for external devices such as timers and small PLCs.
There are 8 math function blocks to process analog variables and add/subtract/multiply/ divide, calculate average, root, logarithms and control functions in cascade, and ratio check.
Options are available with 8 digital inputs/outputs and 8 additional relay outputs to be managed via function blocks with state signals via dedicated LEDs on the LCD display.
Tuning
Advanced tuning algorithms ensure stable and accurate control even with critical or very rapid thermal systems, engaging automatically when necessary.
Timer
Three types of timers let you set delay times before activating the control, hold times on the setpoint value, and timed changes of programmed setpoints.
Setpoint programmer
Models with 128 steps (each step consisting of a ramp and a hold), groupable in a maximum of 16 programs, are available for applications with setpoint profiles.
Enable inputs, event outputs, and messages to display can be assigned to each step.
Double programmer with synchronous and asynchronous base times for activating two setpoint profiles (even separate) assigned to the two loops.
On-board configuration and graphic configuration with GF_eXpress.
Valve positioner
Models to control motorized valves, with or without feedback.
The position is calculated for floating valves.
For valves with potentiometer via auxiliary input you can control and display the position.
Connectivity
Modbus RTU master/slave, Modbus TCP slave and Bridge Modbus RTU/TCP.
Embedded Webserver interface for easy and quick remote service.
General characteristics
The controller is completely software configurable without accessing the internal electronics.
The universal main input accepts thermocouple sensors, resistance thermometers, and linears.
The controller can be replaced at any time simply by removing the faceplate, without any additional procedures.
TECHNICAL DATA OF 850
OPERATOR INTERFACE | ||
DISPLAY | Type | LCD black background |
Screen area (L x H) | 35 × 30 mm | |
Lighting | Backlit with LEDs, life > 40.000 hours @ 25 °C (with brightness level backl = 8) | |
PV display | Number of digits: 4 to 7 segments, with decimal point Digit height: 17 mm Color: white | |
SV display | Number of digits: 5 to 14 segments, with decimal point Digit height: 7.5 mm Color: green | |
Unit of measurement | Selectable, °C, °F or custom 1 Color: same as PV display | |
Controller state signals | Number: 6 (RUN, MAN, _/-, REM, SP1/2) Color: amber | |
Output state signals | Number: 4 (1, 2, 3, 4) Color: red | |
KEYPAD | Number of keys: 4 silicon (Man/Auto, INC, DEC, F) Type: mechanical | |
INPUTS | ||
MAIN AND AUXILIARY INPUT | Sensor type | • Thermocouples, RTD (PT100, JPT100), IR Pyrometers with type K output, 4…20mA, 0…20mA, 10V, 5V, 1V, 60mV, potentiometer
•Reading accuracy: ±0.1% of value read
This Gefran controller, when subjected to the necessary calibration operations in the field, is suitable for use in Nadcap applications for any class of oven, from 1 to 6, according to specification AMS2750E, paragraph 3.3.1. |
Thermocouple Input | • Types: J, K, R, S, T, C, D, B, E, L, L-GOST, U, G, N,Pt20Rh- Pt40Rh Custom linearisation available • Linearisation accuracy: according to standard ITS90 polynomes; refer to user manual for details • Cold joint accuracy: < ± 1°C at 25°C ambient temperature • Cold joint compensation: greater than 40:1, rejection at changes in room temperature exceeding 25°C • Diagnostics: Indication of faulty probe and out of scale | |
RTD input (Pt100 and JPt100) | • Types: Pt100, JPt100. Custom linearisation available • Calibration precision: < ±0.1% of the value read in °C ± 0.4°C • Linearisation accuracy: <±0.062°C • Thermal shift: < (±0.002% of read value/°C, starting from 25°C room temperature) ± 0.1°C
• Diagnostics: Indication of faulty probe and out of scale | |
MAIN AND AUXILIARY INPUT | Linear DC input | • Tipes : 0…60 mV, 0…20mA, 4…20mA, 0…1V, 0…5V, 0…10V • Input impedance : 0…60mV, 0…1V : > 100 MΩ 0…5V, 0…10V : > 400 kΩ 0…20mA, 4…20mA : 50 Ω • Linearisation: linear or custom • Calibration accuracy: < 0.1% full scale • Thermal shift: <±0.003% full scale/°C, starting from 25°C room temperature |
Sampling time | 60 ms or 120 ms, selectionable | |
Digital filter | 0,0…20,0 s configurable | |
Rejection to network disturbance (48-62Hz) | Rejection to differential mode: >80 dB Rejection to common mode: >150 dB | |
Temperature unit of measure | Grade C / F, selectable on the keypad | |
Reading interval | Tipe: linear Scale: -1999…9999,settable decimal point | |
Insulation | Functional insulation between main and auxiliary inputs |
TA (ammeter) INPUT | Type | Isolated via external transformer |
Number: 2 max Max. capacity: x / 50 mA AC Line frequency: 50/60 Hz Input impedance (Ri): 10 Ω | ||
Accuracy | ±2% f.s. ±1 digit @25 °C | |
DIGITAL INPUTS | Type | voltage-free contact, or NPN 24 V – 4,5 mA, o PNP 12/24 V – max 3,6 mA for detail see electrical connections |
Isolation | 250 V | |
Number | 3 max | |
OUTPUTS | ||
Relay (R) | Numero: 3 max (4 max con 3 relè con contatto in comune) Tipo di contatto relè: NO Corrente max: 5A (2A per certificazione UL), 250VAC Carico minimo: 5 V, 10 mA Number of operations: > 600,000 @ 2A load current Double insulation Installation of an external R-C suppressor (“snubber”) is recommended | |
Logic (D) | Number: 4 max Type: for solid-state relays Voltage: 24 V ±10% (min 10 V @20 mA) Isolated from main input | |
Isolated logic (M) | Number: 2 max Type: MOS optically isolated inputs for PLC and AC / DC Voltage: 30 V AC/DC max Current: 100 mA max Resistance ON: 0,8 Ω max Isolation: 1500 V | |
Triac ( long life relay) (T) | Number: 1 max Load: resistive Voltage: 75…240 VAC Current max: 1 A Isolation 3 kV snubber circuit integrated zero crossing switching | |
Continue (A) | Number: 1 max 0…10 V, max 20 mA, Rout: > 500 Ω 0…20 mA, 4…20 mA, Rout: < 500 Ω Resolution: 12 bit Insulation compared to main input | |
Analog retransmission (A1) | Number: 1 max 0…10 V, max 20 mA, Rout: > 500 Ω 0…20 mA, 4…20 mA, Rout: < 500 Ω Resolution: 12 bit Insulation compared to main input | |
ALARMS | Number of alarm functions | 4 max, assignable to an output |
Possible configurations | Maximum, minimum, symmetric, absolute/relative, exclusion at firing, memory, reset from keypad and/or contact, LBA, HB HBB Hold Back Band if enabled with Programmer function Power variation alarm | |
POWER SUPPLY | For sensor VT1, VT2 | Voltage: 24 VDC ±10% Current max: 30 mA |
For potentiometer VP | Voltage: 1 VDC ±1% Current max: 30 mA | |
CONTROL FUNCTIONS | ||
CONTROL | Type | Single loop, double loop |
Control | PID, ON/OFF, single action heat or cool, double action heat/cool | |
Control output | Continuous or ON/OFF Cycle time: constant or optimized (BF) | |
Control output for motorized valves | OPEN/CLOSE for floating motorized valve or with feedback with po- sition control by potentiometer on Relay, Solid-state, Triac outputs. |
SETPOINT PROGRAMMER
(double Programmer if double loop) | Number of programs | Max 16 (if double loop 8 + 8) Start / Stop / Reset / Skip via digital inputs and/or outputs from logic operations Output state: Run /Hold / Ready / End |
Number of steps | Max 128, each with own setpoint, ramp time and hold time Times settable in HH:MM or MM:SS Max 4 consents, configurable for ramp and for hold Max 4 events, configurable in ramp and in hold | |
MULTIPLE SETPOINTS | Number of setpoints | Max 4, selectable from digital input Each setpoint change is subject to set ramp, different for up and down ramp |
LOGIC OPERATIONS 1 | Digital function blocks | Max 32, with 4 input variables per block. The result can act on the state of the controller, of the programmer on alarms and outputs. Each function has an AND, OR with TIMER block. |
OPERATIONS MATHEMATICAL 1 | Analog function blocks | Max 8, with 2 input variables per block, with operators such as + , – , × , : , average, square root, … The result may act on analog variables in input to PID loops (con- trolled variable, setpoint) or analog outputs . |
TIMER FUNCTION | Number timer | Standard: 1 If double loop: 2 independent |
Modes | START / STOP STABILIZATION (timer is on when PV enters a band set around setpoint; at end of count you can activate an output, shut down SW or change SP1/SP2) FIRING (timed activation of control after power on) | |
ENERGY COUNTER | Calculation done on nominal line voltage and nominal load power or on rms current measured on load via CT | |
DIAGNOSTIC | Short circuit or open circuit (LBA alarm) Interrupted or partially interrupted load (HB alarm) Short circuit of control output (SSR alarm) | |
RETENTIVE MEMORY | Type | FRAM |
Writes | Max. number: > 1010 cycles Retention: > 10 years |
(*) if in standard mode; if in “Simplified programmer” mode, Max 12 programs
(**) freely selectable in any program, if in standard mode; if in “Simplified programmer” mode, MAX 16 steps per program, in a set order: Program 1 Step 1-16, Program 2 Step 17 – 32, and so on
GENERAL DATA | ||
POWER SUPPLY | Operating voltage | 100…240 VAC/VDC ±10%, 50/60 Hz (20…27 VAC/VDC ±10%, 50/60 Hz) |
Power dissipation | 10 W max | |
Protections | Overvoltage 300 V / 35 V | |
Connection | Screw terminals and crimp connector, max. wire section 1 mm2 | |
CONNECTIONS | Serial configuration port | Connector: microUSB |
RS485 (option) | Baudrate: 1200, 2400, 4800, 9600, 19.200, 38.400, 57.600, 115.200 bit/s Protocol: Modbus RTU slave Insulation respect to main input Screw terminals and crimp connector, max. wire section 2,5mm2 | |
Master Modbus | Baudrate: 1200, 2400, 4800, 9600, 19.200, 38.400, 57.600, 115.200 bit/s Protocol: Modbus RTU Master Screw terminals and crimp connector, max. wire section 2,5mm2 | |
AMBIENT CONDITIONS | RTU Bridge | Baudrate: 1200, 2400, 4800, 9600, 19.200, 38.400, 57.600, 115.200 bit/s Protocol: Modbus RTU Master Screw terminals and crimp connector, max. wire section 2,5mm2 |
Ethernet Modbus TCP and Webserver (optional) | Baudrate : 10/100BaseTX, 10/100Mbit/s Protocol : Modbus TCP slave, Webserver integrato Isolation from other peripherals Standard RJ45 conector | |
Inputs and outputs | Screw terminals and crimp connector, max. wire section 2,5 mm2 | |
Use | Internal | |
Altitude | 2000 m max | |
PROTECTION LEVEL | Operating temperature | -10 … +55 °C (as per IEC 68-2-14) |
ASSEMBLY | Storage temperature | -20 … +70 °C (as per IEC 68-2-14) |
Relative humidity | 20…85% RH non-condensing (as per IEC 68-2-3) | |
DIMENSIONS | IP 65 on front panel (as per IEC 68-2-3) | |
WEIGHT | Positioning | On panel, removable faceplate |
CE STANDARDS | Installation regulations | Installation category: II Pollution degree: 2 Isolation: double |
48 X 48 mm (1/16 DIN), Depth: 100 mm | ||
PESO | 0,16 kg | |
NORME CE | EMC conformity (electromagnetic compatibility) | Conforms to Directive 2014/30/EU norme EN 61326-1 Emissions in industrial environment classe A |
LVD safety | Conforms to Directive 2014/35/EU norme EN 61010-1 | |
CERTIFICATIONS | Generals | This Gefran controller, when subjected to the necessary cali- bration operations in the field, is suitable for use in Nadcap applications for any class of oven, from 1 to 6, according to specification AMS2750E, paragraph 3.3.1. |
Europe | CE, RoHS, REACH | |
USA, Canada | UL, cUL | |
Russia | EAC |
1) Programming is done through the GF_eXpress configuration program
ACCESSORIES
Code | Description | Compatibile | ||
850 | 1650 | 1850 | ||
F060800 | Cable for programming with PC, USB-TTL 3 V with USB – microUSB connectors, length 1.8 m | • | • | • |
F043958 | “GF_eXpress” software CD | • | • | • |
F060909 | Configuration kit for new instruments GF_eXK-3-0-0 | • | • | • |
51968 | Rubber gasket 48×48 front-box | • | ||
51969 | Rubber gasket 48×96 front-box | • | ||
51970 | Rubber gasket 96×96 front-box | • | ||
51292 | Rubber gasket 48×48 box-panel | • | ||
51068 | Rubber gasket 48×96 box-panel | • | ||
51069 | Rubber gasket 99×96 box-panel | • | ||
51250 | Fastening box to panel | • | ||
49030 | Fastening box to panel | • | • | |
51294 | Protection of contacts at box bottom | • | ||
51328 | Protection of contacts at box bottom | • | • | |
51454 | 18 contacts at box bottom | • | ||
51453 | 24 contacts at box bottom | • | ||
51738 | 36 contacts at box bottom | • | • | |
330200 | Current transformer (CT) 50/0.05 A | • | • | • |
330201 | Current transformer (CT) 25/0.05 A | • | • | • |
Reviews
There are no reviews yet.