GT-540P-3GWA-OEM2 user’s manual v1.0
GT-540P-3GWA-OEM2 user’s manual, Version 1.0, 2013/10
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2.
Hardware
2.1
Specifications
GT-540P-3GWA-OEM2
System
CPU
32 bit CPU
SRAM 64
KB
Flash Memory
512 KB
RTC
Gives time(sec, min, hour) & date, leap year compensation
Watchdog Yes
Micro SD Inerface
Max 4GB
Serial ports
COM1 RS-232
:
TXD,RXD,GND for configuration
COM2
RS-485
:
D+,D- for Modbus RTU device connectivity
Digital Input
Channels 4
Input Type
Sink or Source, Isolated channel with common power or
ground
Off Voltage Level
+1V max.
On Voltage Level
+3.5 ~ 30 VDC
Isolated Voltage
3750Vrms
Counters
6 (16 Bit, 5~40Hz), Min. Pulse Width : 25ms
Relay
Channels 3
Type
Form A (SPST N.O.)
Operating Voltage
Range
250 VAC/30 VDC
Max. Load Current
5.0A/channel at 25°C
Electrical Life
( Resistive load )
5 A @ 250 VAC 50,000 ops
3 A @ 250 VAC 100,000 ops
Mechanical Life
20,000,000 ops. at no load
Analog Input
Channels 1
Resolution 12
bit
Input Range/Type
0 ~ 20 mA
2G System
GPRS
Quad-band 850/900/1800/1900 MHz
GPRS multi-slot : class 10/8