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Tuning
Advanced tuning algorithms refined over time guarantee
stable, accurate control even with critical or very rapid ther-
mal systems, automatically activated when necessary.
Timers
Three different types of timer permitting waiting times to be
set before activating control, maintenance times on setpoint
values, and scheduled set changes over time.
Setpoint programmers
Up to 192 steps are available for applications with setpoint
profiles, each with a ramp and maintenance time, which can
freely be grouped into up to 16 programmes. Each segment
may be associated with enabling inputs, event outputs, and
configurable messages to be displayed. In models 1850, the
display also permanently shows the step number and pro-
gramme number underway. Double programmer mode, with
a synchronous or asynchronise timing base, permits activa-
tion of two different setpoint profiles which may be indepen-
dent of one another and may be associated with two control
loops. The clock/weekly calendar function with a real-time
clock and buffer battery facilitate starting and stopping of
various programmes in default automatic mode.
Simplified keyboard configuration permits creation and edi-
ting of simple programmes with only three parameters per
step, with no need for a PC, cables, or configuration softwa-
re, while the extended configuration with Gf_ eXpress also
offers graphic functions for displaying the profiles created.
Valve positioner
Models are available for motorised valve control, with or wi-
thout position feedback. The position of floating valves is
calculated; for valves with potentiomenters, auxiliary inputs
can be used to control valve position and display it in nume-
rical form or in one of 3 configurable bar graphs (for models
1650/1850)
Connectivity
850/1650/1850 "Performance" controllers have three diffe-
rent levels of communication with automation and supervi-
sion devices:
-RS485 Modbus RTU slave serial communication for interfa-
ce with Master Modbus
-RS485 Modbus RTU master serial communication for rea-
ding/writing information toward Modbus slave devices such
1.2.
Differences among models
Display dimensions
PV display
SV display
Display F
Bargraph PV/SP
Configurable Bargraph
Keys
Max. digital inputs
Power dissipation
Dimensions
Weight
n/a = not available
850
35 × 30 mm
4 digit, 7 seg., H = 17 mm
5 digit, 14 seg., H = 7,5 mm
n/a
n/a
n/a
4
3
10 W
48 × 48 mm (1/16 DIN)
0,16 kg
80209C_MHW_850-1650-1850_20-2020_ENG_pag. 11
as power controllers or other controllers
-RJ45 Ethernet Modbus TCP port, which can also be used
as a bridge toward Modbus RTU slave devices.
An Ethernet connection may be used to access the Web Ser-
ver service offering a number of monitoring, diagnostics and
configuration pages, accessible via local or remote networks
with an ordinary browser and two password levels.
General features
Performance controllers are entirely configurable using the
software and keyboard, without accessing their internal
electronics, but the controller can be replaced at any time by
simply pulling it out from the front, with no further operations,
maintaining IP65 protection for the front.
Main features
• Models 1/16 DIN ( 850 ); 1/8 DIN ( 1650 ); ¼ DIN ( 1850 )
• Accuracy 0.1%, AMS2750E compliance
• Sampling time 60ms
• Operator interface with large LCD display and three confi-
gurable bar graphs (mod. 1650/1850)
• Diagnostic scroll messages, configurable, in the selected
language
• Easy setup, wizard, copy/paste parameters even without
power
• Preventive maintenance, with energy counters (kWh) and
load switching
• 32 logical application blocks
• 8 mathematical application blocks
• Timers, setpoint programmers and algorithms to control
motorised valves
• Advanced control parameter tuning
• Differentiated password levels
• 2 universal inputs configurable for thermocouples, ther-
moresistances, linear inputs
• 3rd linear input for remote setpoint and potentiometer
feedback (mod. 1650/1850)
• 2 PID control loops
• • 2 setpoint programmers (192 steps in 16 programs, or
12 programs with 16 fixed steps each)
• Relay, logic, isolated analogue outputs
• Up to two TA inputs for interrupted load diagnostics
• Modbus RTU Master and Slave communication
• Ethernet Modbus TCP and Modbus bridge communication
• Weekly clock\calendar with RTC
• Extractable from the front for immediate replacement
1650
37 × 68 mm
4 digit, 7 seg., H = 17 mm
4 digit, 7 seg., H = 14 mm
5 digit, 14 seg., H = 9 mm
dual, 11 segments
11 segments
4
5
10 W
48 × 96 mm (1/8 DIN)
0,24 kg
1850
83 × 68 mm
4 digit, 7 seg., H = 23 mm
4 digit, 7 seg., H = 11 mm
7 digit, 14 seg., H = 9 mm
dual, 11 segments
11 segments
6
5 + 8
12 W
96 × 96 mm (1/4 DIN)
0,35 kg
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