Laurel Electronics LT: 4-20 mA & Serial Data Output Transmitter for Process Signals - Manual (Page 2)

LAUREL ELECTRONICS INC. , 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 2
Specifications
Analog Input Range Resolution Accuracy Input Ohms
DC Voltage
± 200.00 mV
± 2.0000 V
± 20.000 V
± 200.00 V
± 600.0 V
10 µV
100 µV
1 mV
10 mV
100 mV
± 0.01% FS
± 2 counts
1 GΩ
1 GΩ
10 MΩ
10 MΩ
10 MΩ
± 2.0000 mA
± 20.000 mA
± 200.00 mA 0.1 µA
1 µA
10 µA
± 0.01% FS
± 2 counts
100 Ω
10 Ω
1 Ω DC Current
± 5.000 A 1 mA
± 0.1% FS
± 2 counts
0.01 Ω
Input Resolution
Update Rate, Max
Max applied voltage
Over-current protection 16 bits (65,536 steps)
50/sec at 50 Hz, 60/sec at 60 Hz
600 Vac for 20, 200 & 600 V ranges, 125 Vac other ranges
25x for 2 mA, 8x for 20 mA, 2.5x for 200 mA, 1x for 5 A
Analog Output (standard)
Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation
Step response time 0-20 mA or 0-10 Vdc (selectable)
10V (0-500Ω load)
2 mA (5 kΩ load)
16 bits (65,536 steps)
0.02% of output span plus conversion accuracy
250V rms working, 2.3 kV rms per 1 minute test
50 ms
Dual Relay Output (standard)
Relay Type
Load Rating Two solid state relays, SPST, normally open, Form A
120 mA at 140 Vac or 180 Vdc
Transducer Excitation Output (standard)
Output Levels
Output Isolation 5V@100 mA, 10V@120 mA, 24V@50 mA (jumper selectable)
50V from signal ground
Serial Data Output (standard)
Signal Types
Data Rates
Output Isolation
Serial Protocols
Modbus Modes
Modbus Compliance
Digital Addressing RS232 or RS485 (half or full duplex)
300, 600, 1200, 2400, 4800, 9600, 19200 baud
250V rms working, 2.3 kV rms per 1 min test
Modbus RTU, Modbus ASCII, Laurel ASCII
RTU or ASCII
Modbus over Serial Line Specification V1.0 (2002)
247 Modbus addresses.
Up to 32 devices on an RS485 line w/o a repeater.
Power Input
Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption 85-264 Vac or 90-300 Vdc (DC operation not UL approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical, 3W with max excitation output
Mechanical
Dimensions
Mounting
Electrical Connections 129 x 104 x 22.5 mm case
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required 0°C to 55°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan.