Varec TankGate Interface 8315 Series - Manual (Page 19)

8315 TGI Hardware
Varec, Inc. 9
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, there is 230 mA
of field power available. At +48VDC, there is 230 mA of field power available.
Figure 2-8: Selection Jumper W3
2.2.2 Switches and Indicators
2.2.2.1 Reset push-button (SW3)
The RESET Switch is used to re-initialize the system hardware by causing it to go to a known
starting state. This switch may be pressed at any time; however, it will do the following:
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
A B
F1
F2
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
A B
VFIELD=48V
VFIELD=24V
J8
J7
W3