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Serial communications (option), Performance, Reference conditions – West Control Solutions N8080 (for 2xxx) User Manual

Page 38: Performance under reference conditions

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Accuracy:

0.25% (mA @ 250W, V @ 2kW); degrades

linearly to 0.5%.

Resolution:

8 bits in 250mS (10 bits in 1 second

typically).

Update Rate:

4/second approximately.

Load Impedance:

mA ranges - 500

max.

V ranges - 500

min.

A.8

SERIAL COMMUNICATIONS (OPTION)

Type:

Serial asynchronous, UART to UART.

Data Format:

Open ASCII; One start bit, even parity,

seven data bits, one stop bit.

Physical Layer:

RS485.

Maximum Number of

Zones:

99.

Baud Rate:

Selectable from 1200, 2400, 4800 and

9600 Baud.

A.9

PERFORMANCE

Reference Conditions

Ambient Temperature:

20

°

C

±

2

°

C

Relative Humidity:

60 - 70%

Supply Voltage:

90 - 264V AC 50Hz)

Performance Under Reference Conditions

Common Mode Rejection:

>120dB at 50/60Hz giving negligible effect

at up to 264V 50/60Hz.

Series Mode Rejection:

>500% of span (at 50/60Hz) causes

negligible effect.

DC Input

Measurement Accuracy:

Typical

±

0.01% of span

±

1LSD;

±

0.05% of

span

±

1LSD max.

A-3

Volume II

PM091-A

59136