Sevcon Gen4 Applications Reference Manual page 40

Pin Name Type
Size 2 Power
(and later
size 4)
models:
5V supply
output
Size 4 & 6 Power
models:
10
Key switch
input
11 Contactor Out
out 3
12 Output 3 Power
Supply +
13 CAN High Comms
14 Encoder A Digital
Input pulse
3-16
What to connect
5Vsupply output
From 'dead' side of key
switch via suitable fuse
To the switched low
side of contactor or
valve coil.
(DO NOT USE WITH
CAPACITIVE LOADS).
To one end (high side)
of a contactor to be
controlled by Contactor
out 3
CANbus High signal
From the speed
encoder A channel
Maximum Comment
rating
I = 100mA. This output can be used to
power transducers or similar
V = 5V
devices at 5V and up to
100mA.
7A This input supplies power
(Total of all from the battery for all the
contactor logic circuits.
output
The unit cannot operate
currents plus
without "Key switch in"
1.0A)
supply.
Pins 1, 6 and 10 are
connected together
internally and can be used
individually or in parallel.
2.0A per This output provides low
output, side voltage or current
subject to a control to the load
limit of 6A for depending on configuration.
the total of
The output goes low or is
all the
chopped to activate the
outputs.
load. It goes high (to Vb) to
V = Vb
de-activate the load.
2A This output feeds power to
the contactors. The output is
at battery voltage.
V = 5 V Maximum bus speed 1
Mbits/sec
Alternative connection to pin
16
I = 25 mA Check the speed encoder
(internally signals have the correct
limited) number of pulses per
V = 8 V (for revolution.
current-
Check Gen4 is configured
source
for the type of encoder you
encoders)
are using (open-collector or
V = 2.5V or current-source)
5V (for open-
collector
encoders)