Smart Coin System User Manual
Page
20
of
28
Copyright © Innovative Technology Ltd 2015
GA02033
5.3
Earth Bonding
It is
very
important that the base plate is bonded to earth, as lack of proper bonding
can cause communication issues and failures with the SMART Coin System.
The earth bond should be made to any of the 6 holes in the bottom of the base plate
and be bonded to mains earth, typically through the Power Supply Unit.
Information
Earth resistance.
The resistance between the base plate and the Earth
pin on the mains plug should be less than 0.7 ohms.
5.4
Electrical Interfaces
SMART Hopper
All the connectors needed to set up the SMART Coin System are easily accessible on
the bottom base: there are two connectors that are used to allow interfacing and
programming:
Information
Power always required
regardless of connection
type.
Power is always required on pins 3 and 4 of the 4
way connector.
The first connector is a 4 pin socket used to power up the SMART Hopper.
Pin 3
Pin 4
Pin 2
Pin 1
Pin
Description
1
+24V DC
2
0V / Ground Connection
3
N/C
4
N/C
