8300

Hardware

 

 

+15 and -15 Volts. These are rated 210 mA, 50 mA, and 5 mA, respectively. The DC Power terminal block is shown below:

Figure 2-6: DC Input voltage terminal block

 

 

EARTH

 

 

CTS

 

A

B

NEUTRAL

 

 

 

 

 

 

LINE

 

 

 

 

 

 

SURGE GND

 

 

 

 

RS232

+

VFIELD

 

TXD

 

 

-

 

 

 

 

 

 

COM

 

COM1

 

 

 

 

 

 

A/TXD

 

 

 

 

RS485

B/RXD

 

 

RXD

 

 

GND

COM1

 

 

 

RTS

 

 

 

CTS

 

 

 

0

 

 

 

 

 

 

 

 

TXD

 

 

GND

 

 

 

RXD

COM 0

 

 

 

 

GND

 

 

 

 

+15V

AUX POWER

J7

 

 

 

 

+5V

 

 

 

 

GND

 

 

 

 

-15V

 

 

 

AUX

 

 

 

 

 

+15V

 

 

 

 

 

+5V

POWER

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

J8

-15V

 

 

 

 

 

 

 

2.2.1.5AC Power Fuses (F1,F2)

The AC Power Fuses provide protection for the AC input power. The two fuses, F1 and

F2, are rated at 500 mA, 250 V.

Figure 2-7: AC Power Fuse

 

 

 

F1

 

 

EARTH

 

A

B

NEUTRAL

 

 

 

LINE

 

 

 

SURGE GND

 

RS232

+

VFIELD

 

 

-

 

COM1

 

 

 

 

A/TXD

 

 

RS485

B/RXD

 

 

 

GND

COM1

 

 

 

 

 

RTS

 

 

 

CTS

 

 

 

TXD

 

 

 

RXD

COM

 

 

 

0

 

 

GND

 

 

 

+15V

AUX

 

 

+5V

POWER

 

 

GND

 

 

-15V

 

 

 

 

F2

2.2.1.6Field Voltage Selection Jumper (W3)

The Field Voltage Selection Jumper W3 determines the voltage available at the VFIELD terminals (J3). The Field Voltage can be configured for +24 VDC or +48VDC. At +24VDC,

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Varec 8315 Series manual AC Power Fuses F1,F2, Field Voltage Selection Jumper W3