9
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

2.2.1.5 AC 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

2.2.1.6 Field 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,

EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWARE HANDSHAKING
AB
CTSTXDRXD
GND
+15V+5V
GND
-15VCOM 0 AUX POWER

J8

J7

EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWARE HANDSHAKING
AB
F1
F2