ADELSYSTEM DC-UPS Series Panduan Operator - Halaman 9

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9.7 THERMAL BEHAVIOUR

Surrounding air temperature 50°C. For ambient temperature of over 50°C, the output current must be

reduced by 2.5% per °C. Max 70°C At the temperature of 70°C the output current will be 50% of In. The

equipment does not switch off in case of ambient temperature above 70°C or thermal overload. The

devices are protected for Over temperature conditions "worst case"; in this situation the device Shut-down

the output and automatic restart when temperature inside fall.

10 MODBUS

Some devices are provided of Modbus "RTU" communication protocol port; which requires the only one

device be the Master, all the others must be slave.

Hardware interface: RS485.

10.1 ELECTRICAL CHARACTERISTICS

The unit is a SLAVE in a MODBUS network. The slave units are compliant to the following specifications:

Transmission mode:

Electrical Interface:

Baud rate:

Data format:

Parity:

Stop bits:

Slave address:

Connector type:

Cable:

Connector name

Pinout (fig. below)

10.2 HOW TO CONNECT MODBUS

10.2.1 Daisy Chain general connection Diagram

To connect the device in ModBus field, please use AUX2 and AUX3 Port.

• Port: AUX 2 No. 13 is Present only in Sizes 3 and Sizes 4, MODBUS connection via RJ45 connector.

• Port: AUX 3 No. 14 Present only in Sizes 4. The function is the same of Auxiliary Output "AUX 2"

MODBUS RTU

RS485 half-duplex serial line

4800 / 9600 / 19200 / 38400 (default) bps

8 data bits

even (default) / odd / none

1 (parity odd or even) / 1 or 2 selectable (parity none)

configurable in the range 1 (default) to 247

RJ45

Shielded twisted pair, 8-wire RJ-45 plug

Size 3

AUX2

A = pin 2, B = pin 1,

Common = pin 3

Size4

AUX3

A = pin 5, B = pin 4,

Common = pin 3