Page 5
Pro-120 controller instructions
4
¶ Specifications
5
Mounting
The Pro-120 is designed for mounting via the
heatsink as in the diagram (facing page). This also
shows a section through the optional base and cover .
This mounting will normally be on to a metal chassis
which will act as additional heatsinking but, in most
applications, full current is only drawn for short
periods so little heating will be experienced.
However, the Pro's heatsink is a thick block of
aluminium which won’t cool down quickly to the air
if it does get hot so some heatsinking should be used.
A suitable metal plate which will usually be the
vehicle’s chassis.
For sustained high current use you must use a
substantial extra heatsink with heatsink compound
on the joint between the Pro’s block and your
heatsink.The Pro 120’s heatsink is not connected to
the rest of the circuitry. Mounting holes are tapped
M4.
Optionally a base/heatsink and cover is available for
the Pro-120 - see section 14.
Corner mounting holes are also present but we
recommend mounting only by the heatsink.
Whatever you do, make sure the controller can’t get
wet and, if it does, don’t connect the battery until
you have dried the controller thoroughly. The water
won’t cause damage unless the unit is connected to
the battery, when electrolytic corrosion will occur.
See also section 15.
Supply voltage
12v or 24v or 36v or 48v
different models
Supply current
30mA
at zero speed
plus power relay current.
Motor speed
forward
0 to 100% full speed
adjustable
in reverse
0 to 50% full
Or as forward speed
On board option
Output current (typical)
Current limit
125 amps min
155 typical
1 minute rating
100 amps
without additional heatsink!
2 minute
60 amps
without additional heatsink!
continuous
30 amps or more: heatsink dependant.
With no heatsink, over heat typically occurs after 15 minutes at 30 amps.
Regenerated current limit
100 amps
minimum.
Overheat temperature
95°
on heatsink
Overheat current
25 amps typical,
factory adjustable
Switching frequency
20kHz
approximately
Size
160 x 102mm x 40mm
board only
Weight
325g
Input
5
k to 25k pot.
Input voltage
3v minimum for full speed
adjustable
Parking brake driver
1 amp max
tripped
Pot fault detect
greater than 30K
Acceleration time
330mSec to 7 Sec
adjustable
33mS to 0.7 Sec (-RW version)
adjustable
Deceleration time
330mSec to 7 Sec
adjustable
33mS to 0.7 Sec (-RW version)
adjustable
Battery discharge Protection
15v
effectively inactive
Relay Activate Threshold (RAT)
50mV ¶ ‡
100mV max ‡
adjustable
Modulation Start Threshold (MST)
300mV ¶ ‡
600mV max ‡
adjustable
¶ factory setting,
‡ measured on modulator input - pin 6 of expansion connector.
