User`s manual

SH-300 Text Panel
Page 4 of 103
Brightness 60 cd/m
2
Color Monochrome(yellow-green)
Contrast Adjustable resistor
Background light Long life yellow-green LED
Memory 110KB Flash ROM
Communication Port PC RS232& PLC RS485/422 & PLC RS232
Function button 14 freely configurable keys
Allowable power disruption ≤20ms
Frame Dimension 171.8 x 84.2 x 38.6mm
Display Dimension 97.0 x 34.5mm
Installation hole
Dimension
165 x 85mm
Cooling Method Natural air cooling
Weight 260g
—Electric specification
Rated voltage
12 ~24VDC±10% <300mA
Withstanding voltage test 500V AC 1minute(between signal and GND)
Insulation resistance
Over 10M ohm @ DC500V （ between signal
and GND）
—Ambient Requirement
Operation ambient
temperature
–10℃~60℃
Operation ambient moisture 20~90%（no condensation）
Storage temperature –20℃~70℃
Anti-jamming test
Voltage 1500Vp-p,pulse period 1us ，
continuing 1s
Vibration resistance 10~25Hz(2G for 30 min, in any of X,Y,Z axis)
Degree of protection
IP65（the front panel）
Caution!
Pay attention to the two polars of the power and the rated allowable voltage range,
otherwise the main machine will be damaged.
1.3 Hardware Structure
The front panel of SH-300 is as shown in the following figure. There is the 4.3’’STN LCD display at
the top left corner. At the top right corner and the bottom there are 20 thin-film switch keys, which
have a good handle and a long life. The Up Key, Down Key, ESC key, SET key, ALM key and ENT