Emerson DIXELL MRLDS-450 Quick Reference Manual page 4

2.3 Technical Specifications
Category
Signals to Central
Controller
Signals to Central
Controller
Power Supply and
Relays
Wiring
1592018560 MRLDS-450 QRG GB r.1.2 08.06.2020
Analog Current
Analog Voltage
Modbus RTU over
RS-485
Operating Voltage
Inrush Current
Operating Current,
Max.
Relay Rating
Audible Alarm
Alarm Delay
Power and Analog
Signal
Modbus Network
Cable Gland
Specifications
Normal operation:............................................. 4 to 20 mA
Drift below zero:..................................................... 3.8 mA
Measuring range exceeded:................................. 20.5 mA
Instrument fault:.................................................. ≤ 1.2 mA
Fault on analog interface:.................................... > 21 mA
Offline mode/Maintenance signal:....... 3 mA steady signal
0 to 5V; 1 to 5V; 0 to 10V; 2 to 10V (selectable). During
fault condition, 1 to 5V and 2 to 10V outputs are 0V.
Baud rate:............................. 9,600 or 19,200 (selectable)
Start bits:......................................................................... 1
Data bits:......................................................................... 8
Parity:.................................. None, odd, even (selectable)
Stop bits:............................................... 1 or 2 (selectable)
Retry time:.................... 500 ms, min time between retries
End of message:............................... Silent 3.5 characters
19.5 to 28.5 VDC; 24 VAC ± 20%, 50/60 Hz
1.5 A
4W, 170mA @ 24VDC
3 SPDT
1A at 30 VAC/VDC, resistive load
Internal Buzzer ≥72 dB at 4" (10 cm)
0 to 15 minutes (selectable)
2-core shielded cable, 16 to 20 AWG (0.5 to 1.5 mm
3-core, 2 twisted pair + ground, shielded cable with 120 Ω
characteristic impedance, 16 to 24 AWG (0.2 to 1.5mm
M20, 10-14mm cable outer diameter
M16, 4-8mm cable outer diameter
MRLDS-450
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