Varec TankGate Interface 8315 Series - Manual (Page 17)

8315 TGI Hardware
Varec, Inc. 7
2.2.1 Power Supply
•
Unit AC Power terminal block (J2)
•
Surge Protection terminal block (J4)
•
Field Power terminal block (J3)
•
Auxiliary DC Power Output terminal block (J8)
•
AC Power fuses (500 mA - 250V 5x20 mm) (F1, F2)
•
Field Voltage Selection Jumper (W3)
2.2.1.1 Unit AC Input Power terminal block (J2)
The Unit AC power terminal block is used to provide AC power to the Tank Gate Interface. The
power requirements for the Tank Gate Interface are 100-240 VAC, 50/60 Hz. The AC Input
Power terminal block is shown in the figure below.
Figure 2-4: AC Input Terminal Block
2.2.1.2 Surge Protection (Surge Gnd) terminal block (J4)
The Surge Gnd terminal block is used to connect the surge protection components (gas tubes,
MOVs) to earth ground. Ensure there is a low impedance path (< 1ohm) to earth ground (a
ground rod or grounding system).
EARTH
NEUTRAL
LINE
SURGE GND
+
-
VFIELD
J2
J4
EARTH EARTH
NEUTRAL NEUTRAL
LINE LINE
SURGE GND SURGE GND
A/TXD A/TXD
B/RXD B/RXD
GND GND
RTS RTS
CTS CTS
TXD TXD
RXD RXD
GND GND
+15V +15V
+5V +5V
GND GND
-15V -15V
+
-
VFIELDVFIELD
COM1COM1
COM 0COM 0
AUX POWERAUX POWER VFIELD=48V VFIELD=48V
VFIELD=24V VFIELD=24V
RESET RESET
RS232 RS232
RS485 RS485
COM1 COM1
HARDWARE HANDSHAKING HARDWARE HANDSHAKING
A B