4qd Mark 2 Series Instruction Manual - Page 4

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UVP
2
N
1
BDP
RB1
C15
1µ0
RB2
N
C4
10
Gain
100K
N
C23
10n
1µ0
14
C1
MST
100K
C14
15
C2
N
20
Accel
21
P
100K
4µ7
4K7
C3
4K7
22
N
DRR
Decel
23
P
100K
P
24
25
N
30-3B-2-04
Dual Ramp
For shipping, the mating parts of the 'Controls' and 'Parking brake' connectors are inserted into the sockets
on the board. See page 7.
The Pro-120 has double 9.5mm motor tabs, for one
or two motors and single 9.5mm battery tabs. Also
fitted on the battery terminals is a set of 6.3mm
blades, to connect a charger or for similar purpose.
Single 9.5mm
Double 9.5mm
These are illustrated below.
Also available is an expansion connector option as
Cover (optional)
Heatsink (optional)
Page 4
Expansion connector
3
4
1 2 3 4 5 6 7 8 9
P
N
P
5
47v
10p
HPLO
C7
3K3
12
N
C8
RB2
RB1
P
13
N
C10
100K
C13
1µ0
10K
C17
C11b
1µ0
47µ
N
180K
330p
18
1K0
C9A
P
N N
N
19
C9B
16
C12
C11
17
10K
C20
1µ0
S
C21C22
28
N
1µ0
C16
4µ7
C19
26
Reverse
RAT
Half speed
Full speed

3 Features

Thermal sensor Trickle resistor
HPLO
8
N
6
7
P
330p
1µ0
C5
C24
N
4µ7
9
C6
10R
9V1
10R
31
30
N
P P
N
N
N
27
29
32
Brake drive transistor
shown above, see section 12.
There are several on board options which can be
altered by removable jumpers:
Feature
High Pot Lockout
UVP (Battery Discharge Protection) 9.05
Reverse speed
Dual ramp/Preselect reversing
Regenerative Braking
There are also several user adjustments:
Gain
Acceleration
Deceleration
RAT
MST
Relays
100R
330K
A
B
C
D
E
F
1N400?
A
Forward
B
C
Reverse
4 Q D
CB5 0AH
U K
www.4qd.co.uk
Battery & Motor connections
Pot & direction switch via IDC
Splashplate (with cover)
Pro-120 controller instructions
Battery +
Controls
Parking brake
Motor −
Motor +
Battery −
Section Page
9.04
8
8
9.07
9
9.08
9
17
15
11.01
10
11.03
10
11.03
10
11.04
11
11.04
11