Gasboy Gilbarco Interface Unit - Manual (Page 28)

20 Installation Gilbarco Interface Unit v2.1
Gasboy CFN Series
CPU board jumpers
Make sure that K5 and K6 on the CPU board are inserted. An AC power failure will cause
unexpected behavior if these jumpers are absent. Insert also K3, on the pair of K3 terminals
closest and parallel to P9, and K7. CPU board jumpers K1, K2, K4, and K8 must be absent.
Current loop board jumpers
On the current loop board, the lower of the two boards, K1 should be in position 1. K2 should be
present. This is done at the factory, and does not need to be checked unless there are indications
that this needs to be done. If you should remove the interface CPU board, when you replace the
screws holding it on its standoffs, be sure that the insulated washer, if loose, is replaced on the
screw at the front center of the board, near C36.
CPU board DIP switches
DIP switches should be set as follows, except as noted previously. DIP switch bank 2, position —
All switches CLOSED. DIP switch bank 3 and DIP switch bank 4 — All switches OPEN.
Connect and test the installation
Power wiring
The interface unit power cord must be plugged into a grounded outlet referenced to the same
earth ground as any RS485/422 junction boxes and all other RS485/422 equipment at the site, as
described in the Site Controller II Installation Manual.
The Gasboy warranty may be invalidated if wiring requirements described are not met.
RS485/422 site wiring
Make the RS485/422 wiring from the Gilbarco interface to the Site Controller ready, but do not
insert the RS485/422 connector into the port on the interface unit at this time. Use cross cable
C04500.
To connect two interface units to the Site Controller, use an extra Gasboy RS485/422
junction box. Connect its terminal block in parallel with the terminal block of the first junction
box using a short piece of your field wiring cable. Also connect the external ground stud of the
second box to the ground stud of the first or to the ground screw on the power protection unit.
RS485/422 CRIND wiring
The Gilbarco interface unit is connected to the distribution box responsible for the CRINDs using
Gasboy cable assembly C06242 and adaptor C06692, RJ-11 to DB-9P.
Current loop pump wiring
The interface unit is connected to the distribution box responsible for the pumps using Gasboy
cable assembly C06691. This cable connects to P1 at the back of the Gilbarco Interfact unit.
GSM Wiring
Connect GSM to its power supply. Connect Gasboy cable P/N C07248 from the GSM to
interface GSM port, which may be marked “Unused port” or “GSM port”.