Operator responsibility – Safety instructions
10
Temperature selection
digital
via Removable control module RD
indication on DIALOG-Display (LCD)
remote control via personal computer indication on monitor
Temperature indication
VFD-Info-Display
DIALOG-DISPLAY
(LCD)
Resolution
K
0.01 from -9.99 °C to +249.99 °C
Pump pressure display
on VFD-Info-Display in five grades
Liquid level display
on VFD-Info-Display in five grades
Absolute Temperature Calibration
(ATC1)
K
±3
(ATC2)
K
±9
Temperature control
ICC - Intelligent Cascade Control, self-optimizing
Cascade, parameter can be called-in and modified
Working temperature sensor
Pt 100
Safety temperature sensor
Pt 100
Electrical connections:
Computer interface
RS232 or RS485
Programmer input -100 °C to 400 °C =
0 to 10 V or 0 to 20 mA or 4 to 20 mA
Temperature recorder outputs
0 to 10 V (0 V = -100 °C, 10 V = 400 °C)
0 to 20 mA (0 mA = -100 °C, 20 mA = 400 °C)
4 to 20 mA (4 mA = -100 °C, 20 mA = 400 °C)
Stand-by input
External alarm device
24-0 V DC / max. 25 mA
External measurement and control sensor
Pt100, 4-lead technique
Control connector (10) Output voltage:
230 V
∼
/ max. 0.1 A
S a f e t y i n s t a l l a t i o n s a c c o r d i n g t o I E C 6 1 0 1 0 - 2 - 0 1 0 :
Excess temperature protection >TANK<
adjustable from 0 °C ... 320 °C
Excess temperature protection >RES<
adjustable from 0 °C ... 220 °C
Low level protection
float switch
Liquid level display
optical, 5-graded
Classification according to DIN 12876-1
class III FL
Supplementary safety installations
High temperature warning function
o audible (in intervals)
Low temperature warning function
o audible (in intervals)
Supervision of the working sensor
plausibility control
Reciprocal sensor monitoring between
working and safety sensors
difference >25 °C
Alarm indication
o audible (permanent)
Summary of Contents for Presto Plus LH 47
Page 20: ...Operating controls and functional elements 20 Rear...
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