Siemens simatic hmi op27 Equipment Manual page 191

Technical Data
Display
LCD type
Resolution (horizontal x vertical)
Active screen area (mm x mm)
Back-lighting
1)
Service life approx.
1)
The back-lighting tube for the display is subject to wear and is therefore not covered by the warranty. Its service life
is approximately 10,000 to 25,000 hours, depending on operating temperature and type. In unfavorable operating
conditions we recommend replacing the tube after the period has elapsed. The tube is available as a spare part.
Keyboard
Type
System keys with permanent functions
Function keys having configurable func-
tions
those included as soft keys
Power supply
Rated voltage (VDC)
Permissible range (VDC)
Max. permissible transients
Time between two transients
Typical power consumption at 24 V
2
Switch–on current I t
Fuse, internal
Backup battery
Type
1)
Voltage/capacity
Service life
1)
Subject to modification.
Contact assembly for power supply
connection
Switching power
A-2
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OP27M OP27C
Monochrome Color STN
STN
320 x 240
115 mm x 86 mm
1 CCFL tube 1 CCFL tube
22,000 h 25,000 h
OP27
Membrane keyboard
24 (4 having an LED)
24 (18 having an LED)
14
OP27
+ 24 V DC
+18.0 to +30.0 V DC
35 V (500 msec)
50 sec minimum
Approx. 0.3 A
2
0.45 A s
Miniature fuse
OP27
Lithium battery
3.6 V/approx. 1.5 Ah
> 4 years
OP27
24 V DC, 0.3 A (no inductive load)
OP37
Color STN TFT
640 x 480
211 mm x 158 mm
2 CCFL tubes 2 CCFL tubes
25,000- 25,000 h
50,000 h
OP37
32 (4 having an LED)
36 (28 having an LED)
20
OP37
Approx. 1.6 A (without AT
cards)
2
0.55 A s
OP37
OP37
OP27, OP37 Equipment Manual
Release 05/99