Type / N°
Rev.
Fw
Date
Page
Total pages
EW055.600D
D
4L
6
th
June 2018
12
43
EsiWelma
®
s.r.l.
Automatic mode
(Self-Service)
is almost the same but during the delivery the
“deadman’s
break” push button must be always pushed. If this push button is released before the
refuelling finishes, delivery stops and has to be locally rehabilitated by operator using the key
selector in reset position, then the user can re-start the delivery by pushing (and keeping) the
“deadman’s break” push button.
In remote, by the button "Single Block" (Normally Closed), located in series with the "
deadman’s break" device, the operator may at any time stop the current delivery , which can
be rehabilitated only locally using the key selector in reset position.
According to the standard or the Self-Service mode, the cumputing head works
automatically, detecting the presence of the
I / O Expansion switch board.
The card connection on the flat I²C Bus, is described and shown below. See wiring B.T. § 7.1
2.5.3
Warning light management
To allow operators to follow in remote the operations, each possibile status of the dispenser
is coupled with a unique code as shown in the table below:
Status of the dispenser
Green Light
Red Light
Dispenser off
Off
Off
Dispenser Ready
On
Off
Nozzle off
Flashing
Off
In delivery
Off
On
End of delivery (for low flow or Stop by HOST in Auto)
Off
Flashing
End of delivery (Nozzle in)
≡
Dispenser Ready
On
Off
Deadman’s break (push button released)
Flashing
Flashing
Computing head error (Dispenser not available)
On
On
Computing head set-up (Dispenser not available)
On
On
