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10. TECHNICAL SPECIFICATIONS
80703B_MHW_2850T/3850T_02-2019_ENG
10. TECHNICAL SPECIFICATIONS
OPERATOR INTERFACE
DISPLAY
Type
TFT Touch Screen with 4-wire resistive type technology
View area
Diagonal: 3,5”
Dimensions (L × H): 70 × 52,5 mm (2.57” x 2.07”)
Lighting
Back lit with LED, duration 50.000 hours @ 25 °C (77 °F)
Resolution (pixel)
320 × 240 (QVGA)
Colors
262,000
Max brightness
400 cd/m
2
Contrast
400:1
View angle
Horizontal: 60°
Vertical: +45° ... -60°
KEYBOARD
Number of keys: 6 (of which one programmable)
Type: mechanical
CONTROL FUNCTIONS
LOOP
(Regulation)
Type
Single loop; Cascade (2 consecutive PID: PID1-PID2, PID3-
PID4 …); Ratio; Valve
PID
Number: 8 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 modulation.
Cycle time: constant or optimised (Burst Firing)
Valve control
Open/close for floating type motorized valve
Open/close for motorized valve with feedback (potentiometer
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: 200
Maximum number of programs running at the same time: 4
Available commands: START, HOLD/PAUSE, RESET, END,
SKIP
Status outputs: RUN, READY,END, HOLD
Segments
Setting: time segments (hh: mm / mm: ss /
dd: hh) 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
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 operation,
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
10.1. 2850T controller
Содержание 2850T
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