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10. TECHNICAL SPECIFICATIONS
80703B_MHW_2850T/3850T_02-2019_ENG
10.2. 3850T controller
OPERATOR INTERFACE
DISPLAY
Type
TFT Touch Screen with 4-wire resistive type technology
View area
Diagonal: 7”
Dimensions (L × H): 152 × 90 mm (5.98” x 3.54”)
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
2
Contrast
1000:1
View angle
Horizontal: 60°
Vertical: +45° ... -60°
KEYBOARD
Number of keys: 10 (of which 3 programmable)
Type: mechanical
CONTROL FUNCTIONS
LOOP
(Regulation)
Type
Single loop; Cascade (2 consecutive PID: PID1-PID2,
PID3-PID4 …); Ratio; Valve
PID
Number: 16 max
Parameter groups: 10 max
Regulation type
PID
ON/OFF
Single action heat or cool
Double action heat or cool
Control output
Type: continuous (0... 100%) or ON/OFF with PWM mod-
ulation.
Cycle time: constant or optimised (Burst Firing)
Valve control
Open/close for floating type motorized valve
Open/close for motorized valve with feedback (potentiom-
eter position control)
Sampling time
25 ms
Tuning
Automatic Self Tuning algorithms.
Alarms
Number: max 4 associated with each PID
Type: maximum, minimum, symmetric, absolute/relative
SETPOINT PROGRAMMER
Programmer type
Synchronous and asynchronous setpoint programs
Single-segment setpoint or ramp + maintenance profile
Integrated function blocks
Program profile
From 1 to 4 synchronous profiles
Program
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
Segments
Setting: time segments (dd:hh / hh:mm / mm:ss) or gradi-
ent 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
IN profile events
Max number of settable IN events: 16
Acknowledged events: digital IN-resource, digital OUT,
system merker
OUT profile events
Max number of settable OUT events: 16
ON/OFF while running the profile segment
Events acknowledged: digital OUT resource, logic opera-
tion, programmer status
Simplified configurability
Template
Configuring and running the same program on several
PIDs simultaneously
HBB alarm
Alarm range configuration per single segment
High/low range setpoint
Содержание 2850T
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