PG Drives Technology S45A User manual

S-DRIVE CONTROLLER FAMILY
TECHNICAL MANUAL
SK76745/10

©PG Drives Technology 2016
All rights reserved.
This manual is furnished under copyright and may only be used in accordance with the terms laid out by PG Drives Technology.
The information in this manual is furnished for informational use only, is subject to change without notice, and should not be
construed as a commitment by PG Drives Technology.
Except as permitted by such terms, no part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any
form or be any means electronic, mechanical, recording, or otherwise - without the prior written permission of PG Drives
Technology. [phone]

PG DRIVES TECHNOLOGY S-DRIVE TECHNICAL MANUAL
SK76745/10
3
TABLE OF CONTENTS
About this manual ............................................... 8
Chapter 1 - Operation ..........................................................9
1Introduction..............................................11
2General....................................................11
2.1 Handling.....................................................11
3 Controls....................................................11
3.1 On/Off Switch .............................................11
3.2 Status Indicator...........................................11
3.3 Throttle ........................................................11
3.3.1 Wig-wag Throttle................................................ 12
3.3.2 Single-ended Throttle ........................................ 12
3.3.3 Unipolar Throttle................................................. 12
3.4 Reverse Switch............................................12
3.5 Speed Limiting Potentiometer....................12
3.6 Slow/Fast Switch..........................................12
3.7 Audible Alarm.............................................12
4Getting Ready to Drive ............................12
5Tips for Using Your Controller ....................13
5.1 Driving - General ........................................13
5.2 Driving Technique.......................................13
6.1 Hazards ......................................................13
7Safety Checks ..........................................14
7.1 Daily Checks...............................................14
7.2 Weekly Checks ...........................................14
7.3 Servicing .....................................................14
8Status Indication ......................................14
8.1 Single Lamp and LED Status Indicators......15
8.1.1 Status Indicator Steady ..................................... 15
8.1.2 Status Indicator Flashes Slowly .......................... 15
8.1.3 Status Indicator Blinks On Every 5 Seconds........ 15
8.1.4 Status Indicator Flashes Rapidly ...........................
(even with throttle released).............................. 15
8.2 TruCharge Indicator ...................................15
8.2.1 TruCharge Indicator Steady .............................. 15
8.2.2 TruCharge Indicator Flashing Slowly...................15
8.2.3 TruCharge Indicator Stepping Up ......................16
8.2.4 TruCharge Indicator blinks on every 3.5 secs ....16
8.2.5 TruCharge Indicator Flashing Rapidly ................16
8.3 Self-Help Guide ......................................... 16
8.4 Slow or Sluggish Movement....................... 17
9Battery Gauge......................................... 17
9.1 How To Read a Single Bulb (or LED) Battery
Gauge....................................................... 18
9.2 How To Read a TruCharge Battery Gauge 18
10 Pushing your Scooter ............................... 18
11 Programming .......................................... 18
12 Warranty.................................................. 19
13 Servicing.................................................. 19
Chapter 2 –Installation ................................................20
1Documentation ....................................... 22
1.1 S-Drive Operation ...................................... 22
1.2 Dimensions ................................................ 22
1.2.1 S45A, S70A and S90A Controllers.......................22
1.2.2 S120A and S140A Controllers ............................23
1.2.3 S200A Controller ................................................24
1.2 Program Settings ....................................... 24
1.3 Soft-Stop .................................................... 25
1.4 Other Information ...................................... 25
2Immobilizing the Scooter ......................... 25
2.1 Prevention of Unauthorized Use................. 25
2.2 Charger Interlock....................................... 25
3Connections............................................ 26
3.1 General ..................................................... 26
3.1.1 Wiring Configuration S45A, S70A & S90A ...........27
3.1.2 Wiring Configuration S120A & 140A...................27
3.1.3 Wiring Configuration S200A ...............................28
3.2 Connectors & Connector Kits.................... 28
3.2.1 Motor and Battery..............................................29

S-DRIVE TECHNICAL MANUAL PG DRIVES TECHNOLOGY
SK76745/10
4
3.2.1.1 S45A, S70A & S90A........................................... 29
3.2.1.2 S120A & S140A................................................. 29
3.2.1.3 S200A ...............................................................29
3.2.2 Brake Connector ...............................................29
3.2.3 Tiller Interface Connector..................................30
3.2.4 Charger/Programming Connector....................30
3.3 Crimping ....................................................30
3.3.1 Brake, Tiller Interface & Charger/Programming
Connectors .......................................................30
3.3.2 Motor and Battery Connectors.......................... 30
3.4 Wire Gauge and Types ..............................31
3.5 Battery Connection ....................................31
3.6 Motor Connection......................................31
3.7 Solenoid Brake Connection .......................32
4Tiller Interface ..........................................32
4.1 Throttle Potentiometer Configuration .........33
4.2 Speed Limiting Potentiometer Config........33
4.3 ISO-Test Resistor Configuration ...................34
4.4 On/Off Switch .............................................34
4.5 Status Indicator...........................................34
4.5.1 Status Indicator Diagnostic setting .................... 35
4.6 24V .............................................................35
4.7 Slow/Fast Switch..........................................36
4.8 Reverse Switch ...........................................36
4.9 Audible Alarm.............................................36
4.9.1 Brake Light......................................................... 37
4.10 0 Volts.........................................................37
4.11 Inhibit 2....................................................38
4.11.1 Inhibit 2 Mode ...................................................38
4.11.2 Inhibit 2 Speed ..................................................39
4.11.3 Inhibit 2 Operation ............................................ 39
4.12 Inhibit 3.......................................................39
4.12.1 Inhibit 3 Mode ...................................................40
4.12.2 Inhibit 3 Speed ..................................................40
4.12.3 Inhibit 3 Operation ............................................ 40
4.13 Auxiliary Output ..........................................41
5Drive Motors .............................................41
5.1 Gradient Performance ...............................42
5.2 Freewheeling..............................................42
6Charger/Programming Connections
(Off-board & On-board) .......................... 43
6.1 Inhibit 1.......................................................43
6.1.1 Inhibit Mode...................................................... 44
6.1.2 Inhibit 1 Speed.................................................. 44
6.1.3 Inhibit 1 Operation............................................ 44
7Batteries .................................................. 45
8Mounting................................................. 45
8.1 Mounting of the S-Drive..............................45
8.1.1 S45A, S70A & S90A ........................................... 45
8.1.2 S120A + S140A................................................. 45
8.1.3 S200A ............................................................... 46
8.1.3 Orientation........................................................ 46
8.1.4 Position.............................................................. 46
8.1.5 Cables.............................................................. 46
8.2 Mounting the S-Drive + S-cover system .....47
8.2.1 S45, S70A & S90A + S-cover............................. 47
8.2.2 S120A & S140A + S-cover ................................ 48
8.2.3 S200A + S-cover............................................... 48
8.2.3 Orientation........................................................ 48
8.2.4 Position.............................................................. 49
8.2.5 Cables.............................................................. 49
9Production Tests ...................................... 49
9.1 Mounting ....................................................49
9.2 Cables and Connectors ............................49
9.3 Preset Settings.............................................49
9.4 Operational Test .........................................49
9.5 Test Drive ....................................................50
9.6 Soft-Stop Test ..............................................50
10 Electromagnetic Compatibility (E.M.C.) . 50
10.1 Emissions ....................................................50
10.1.1 Motor Suppression ............................................ 50
10.1.2 Cables.............................................................. 50
10.2 Immunity ....................................................51
10.3 Electro-Static Discharge (E.S.D.) .................51

PG DRIVES TECHNOLOGY S-DRIVE TECHNICAL MANUAL
SK76745/10
5
11 Battery Gauge .........................................51
Chapter 3 –Programming .......................................... 52
1Introduction..............................................54
1.1 SP1a Programmer ......................................54
1.2 PC Programmer .........................................54
1.3 Parameters.................................................54
1.4 Safety Fences.............................................55
2Speed Parameters ...................................56
2.1 Forward Acceleration.................................56
2.2 Forward Deceleration.................................56
2.3 Reverse Acceleration .................................56
2.4 Reverse Deceleration.................................56
2.5 Max Forward Speed ...................................57
2.6 Min Forward Speed ....................................57
2.7 Max Reverse Speed ...................................57
2.8 Min Reverse Speed ....................................58
2.9 Speed Limit Pot. Enabled...........................58
3Operation Parameters..............................58
3.1 Throttle Invert ..............................................58
3.2 Sleep Timer.................................................58
4Throttle Parameters...................................59
4.1 Throttle Type................................................59
4.2 Throttle Deadband.....................................59
4.3 Throttle Gain ...............................................59
4.4 Throttle Operated At Power-up...................59
4.5 Throttle Reference Test ...............................60
4.6 ISO Tests Resistor.........................................60
5Battery Parameters ...................................60
5.1 Low Battery Flash Level...............................60
5.2 Cable Resistance.......................................60
5.3 Calibration Factor ......................................60
5.4 Low Battery Alarm.......................................60
5.5 Low Battery Alarm Tone ..............................61
5.6 TruCharge Reset Level................................61
6Inhibit Parameters ....................................61
6.1 Inhibit 1 Mode, Inhibit 1 Speed,
Inhibit 1 Latch ............................................ 61
6.2 Inhibit 2 Mode, Inhibit 2 Speed,
Inhibit 2 Latch ............................................ 61
6.3 Inhibit 3 Mode, Inhibit 3 Speed,
Inhibit 3 Latch ............................................ 61
6.4 Aux Output Mode...................................... 61
7General Parameters ................................ 62
7.1 Soft-Stop .................................................... 62
7.2 Brake Time ................................................. 62
7.3 Output Voltage.......................................... 62
7.4 Status Output Type .................................... 62
7.5 Diagnostic Flash Sequence ...................... 62
7.6 Reverse Alarm ........................................... 63
7.7 Reverse Alarm Tone...........................................63
7.8 Pulse Reverse Alarm .................................. 63
7.9 Diagnostic Alarm ....................................... 64
7.10 Diagnostic Alarm Tone ......................................64
7.11 Brake Disconnected Alarm........................ 64
7.12 Brake Disconnected Alarm Tone .......................64
7.13 Brake Fault Detect ..................................... 64
7.14 Brake Light ................................................. 64
7.15 Push Too Fast Threshold ............................. 65
7.16 Push Too Fast Timeout ............................... 65
7.17 Freewheel Enable...................................... 65
7.18 Inhibit 2 Horn Input Enable ........................ 65
7.19 Inhibit 2 Horn Input Enable Tone ........................66
8Motor Parameters .................................... 66
8.1 Current Limit .............................................. 66
8.2 Boost Drive Current and Boost Drive Time . 66
8.3 Current Foldback Threshold,
Current Foldback Time,
Current Foldback Level,
Motor Cooling Time................................... 66
8.4 Current Foldback Temp. ........................... 67
8.5 Motor Compensation................................ 67
8.6 Motor Stall Timeout .................................... 68
8.7 Braking Current .......................................... 68

S-DRIVE TECHNICAL MANUAL PG DRIVES TECHNOLOGY
SK76745/10
6
8.8 Timed Foldback Braking Current................68
8.9 Timed Foldback Speed..............................68
8.10 Enhanced Motor Compensation (Up),
Enhanced Motor Compensation (Down),
Enhanced Motor Comp (Up) Gain, ...........69
9Memory Functions ...................................69
9.1 Read System Log .......................................69
9.2 Clear System Log .......................................69
9.3 Read Timer.................................................69
9.4 Clear Timer.................................................69
Chapter 4 –Tiller Module............................................ 70
1Introduction .............................................72
1.1 Surface Variant...........................................72
1.2 Inset Variant................................................73
2 Dimensions ..............................................73
2.1 Surface Variant...........................................73
2.2 Inset Variant................................................74
3Mounting .................................................74
3.1 Handling.....................................................74
3.2 Surface Variant...........................................74
3.2.1 Fixing .................................................................74
3.2.2 Sealing ..............................................................75
3.3 Inset Variant................................................75
3.3.1 Fixing .................................................................75
3.3.2 Sealing ..............................................................76
4Wiring.......................................................76
4.1 Wire Gauge................................................76
4.2 Connectors ................................................76
4.2.1 Surface Mount Variant....................................... 76
4.2.2 Inset Variant.......................................................77
5Connections ............................................77
5.0.1 Surface Variant.................................................. 77
5.0.2 Insert Variant...................................................... 78
5.1 Controller Connections ..............................78
5.2 ESD Connection .........................................78
5.2.1 Surface Mount Variant....................................... 78
5.2.2 Inset Mount Variant ...........................................78
6Electromagnetic Compatibility (EMC) ..... 79
6.1 Immunity and Emissions.............................79
6.2 Electro-Static Discharge (E.S.D.) .................79
7Production Tests ...................................... 79
7.1 Mounting ....................................................79
7.2 Cables and Connections ..........................79
7.3 Operational Test .........................................79
Chapter 5 –Warning Summary........................... 80
1Introduction............................................. 82
2Warnings ................................................. 82
2.1 Driving Technique.......................................82
2.2 Hazards ......................................................82
2.3 Safety Checks ............................................83
2.4 Status Indicator Flashes Slowly....................83
2.5 TruCharge Indicator Flashes Slowly ............83
2.6 Pushing Your Scooter..................................83
2.7 Programming .............................................83
2.8 Warranty .....................................................83
2.9 Servicing .....................................................83
2.10 Program Settings ........................................84
2.11 Charger Interlock........................................84
2.12 Connections - General ..............................84
2.13 Battery and Motor Connections.................84
2.14 Crimping ....................................................85
2.15 Wire Gauge and Types ..............................85
2.16 Battery Connection ....................................85
2.17 ISO-Test Resistor Configuration ...................85
2.18 24V .............................................................85
2.19 0 Volts.........................................................85
2.20 Inhibit 2 Speed ...........................................85
2.21 Inhibit 3 Speed ...........................................86
2.22 Drive Motors................................................86
2.23 Freewheeling..............................................86
2.24 Charger Connections ................................86
2.25 Inhibit 1 Speed Limit Value.........................87

PG DRIVES TECHNOLOGY S-DRIVE TECHNICAL MANUAL
SK76745/10
7
2.26 Position .......................................................87
2.27 Production Tests..........................................87
2.28 Program Settings ........................................87
2.29 Introduction ................................................87
2.30 Safety Fences.............................................87
2.31 Forward Acceleration.................................87
2.32 Forward Deceleration.................................88
2.33 Reverse Deceleration.................................88
2.34 Max Forward Speed ...................................88
2.35 Speed Limit Pot. Enabled...........................88
2.36 Throttle Operated At Power-up...................88
2.37 Soft-Stop .....................................................88
2.38 Brake Fault Detect......................................88
2.39 Push Too Fast Threshold &
Push Too Fast Time-out...............................88
2.40 Motor Compensation.................................89
Chapter 6 –Specifications ........................................90
1Electrical Specifications ...........................92
Appendix –A............................................................................ 93
Compliance of the S-Drive range of Scooter
Controllers with ISO 7176-14: 2008 ....................95
Conformity of the S-Drive product family with
ISO 7176-14:2008 ..............................................95
Annex A - wiring guidance...............................100
Summary ............................................................100
Annex —S-Drive command signal leakage ....101
Appendix –B..........................................................................104
Set Up Procedure .............................................106

S-DRIVE TECHNICAL MANUAL PG DRIVES TECHNOLOGY
SK76745/10
8
About this manual
The Technical Manual gives an introduction to the S-Drive ‘Mark 2’ range of scooter controllers. These are identified by part
number D51270 onwards.
Throughout the manual icons are used to draw the reader’s attention.
The icons used are:
Note - A general point for best practice.
Caution - A point of safety which if ignored could result in damage to the Control System or the
vehicle.
Warning - A point of safety which if ignored could cause injury to the individual.
PG Drives Technology accept no liability for any losses of any kind if the points are not followed.

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
9
CHAPTER 1 - OPERATION

S-DRIVE –OPERATION PG DRIVES TECHNOLOGY
SK76745/10
10

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
11
1 Introduction
The relevant contents of this chapter should be included in the scooter operating guide. Further copies are available from PGDT
in either written or disk (Adobe PDF) format. Copies should not be made without the express permission of PG Drives Technology.
The operation of the S-Drive Scooter Controller is simple and easy to understand. The controller incorporates state-of-the-art
electronics, the result of many years of research, to provide you with ease of use and a very high level of safety. In common with
other electronic equipment, correct handling and operation of the unit will ensure maximum reliability.
This chapter covers all types of operation. It is the responsibility of the scooter manufacturer to ensure that only the relevant
sections of this chapter are included in the S-Drive’s operating manual.
Please read this chapter carefully - it will help you to keep your scooter reliable and safe.
2 General
2.1 Handling
Avoid knocking your controller and especially the connectors. Be careful not to strike obstacles with the controller. Never drop the
controller.
When transporting your scooter, make sure that the controller is well protected. Avoid damage to cables.
2.2 Operating Conditions
Your controller uses industrial-grade components throughout, ensuring reliable operation in a wide range of conditions. However,
you will improve the reliability of the controller if you keep exposure to extreme conditions to a minimum.
Do not expose your controller or its components to damp for prolonged periods.
3 Controls
Depending on the specification of the scooter to which the S-Drive is fitted, some or all of the following controls will be used.
3.1 On/Off Switch
The on/off switch applies power to the controller electronics, which in turn supplies power to the scooter’s motor. Do not use the
on/off switch to stop the scooter unless there is an emergency. (If you do, you may shorten the life of the scooter drive
components).
Some scooters may have a keyswitch in addition to the normal on/off switch, the function of the keyswitch is the same as the
on/off switch.
3.2 Status Indicator
Depending on the scooter model, the status indicator may be a single bulb (or LED) or a PGDT TruCharge battery and diagnostics
indicator.
The status indicator shows you that the scooter is switched on. It also indicates the operating status of the scooter. Details are
given in section 8.
3.3 Throttle
The throttle controls the speed of the scooter. The further you push the throttle, the faster your scooter will move. When you
release the throttle the brake is automatically applied.

S-DRIVE –OPERATION PG DRIVES TECHNOLOGY
SK76745/10
12
Depending on the scooter model, the throttle configuration may be one of three types - wig-wag, single-ended or Unipolar.
3.3.1 Wig-wag Throttle
In this configuration, both the speed and the direction of the scooter are controlled by the throttle. To drive forwards, push the
throttle in one direction: to drive in reverse, push the throttle in the other direction.
3.3.2 Single-ended Throttle
In this configuration, just the speed of the scooter is controlled by the throttle. When the throttle is pushed - depending on the
position of the reverse switch (refer to section 3.4) - the scooter will drive in either the forward or reverse direction.
3.3.3 Unipolar Throttle
In this configuration, just the speed of the scooter is controlled by the throttle. When the throttle is moved, in either direction, -
depending on the position of the reverse switch (refer to section 3.4) - the scooter will drive in either the forward or reverse
direction.
3.4 Reverse Switch
This switch will be fitted to the scooter if the throttle configuration is single-ended or Unipolar (refer to sections 3.3.2 & 3.3.3). The
switch is used to change between forward and reverse drive.
3.5 Speed Limiting Potentiometer
This control sets the maximum speed of the scooter. Turn the knob clockwise to increase the maximum speed setting or anti-
clockwise to decrease the maximum speed setting.
3.6 Slow/Fast Switch
This switch selects the driving mode - either slow or fast - of the scooter. You can use this switch to limit the scooter’s driving
behavior in environments where that may be desirable or necessary, e.g. if you are driving indoors or on the sidewalk.
3.7 Audible Alarm
This provides an audible warning when the scooter is being driven in the reverse direction. The alarm may also be used to signal
other conditions, such as scooter in freewheel mode.
4 Getting Ready to Drive
Check that the speed limiting control is turned to a position which suits you.
Operate the on/off switch. Either:
A TruCharge type status indicator will blink and remain on after half a second.
A single bulb (or LED) type status indicator will blink and remain on after half a second.
During the first half-second after the scooter is switched on, the controller is performing important safety checks within itself and
the rest of the scooter’s electrical system. Therefore, if you push the throttle during this time, you will not be able to drive until you
have returned the throttle to the rest position and switched the controller Off and On again.
If the scooter has a single-ended throttle, use the reverse switch to select the direction you want to drive and then push the
throttle to control the speed. If the scooter has a wig-wag throttle, push the throttle in the direction you want to drive.
If you do not push the throttle as you switch the scooter on and the status indicator flashes rapidly, then there may be a trip. Refer
to section 8 for details.

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
13
5 Tips for Using Your Controller
5.1 Driving - General
Make sure that all the controls are within easy reach and are comfortable to operate.
5.2 Driving Technique
The controller interprets the throttle movements and reverse switch setting (if fitted) and drives the scooter in the correct direction
at the appropriate speed. You will need very little concentration to control the scooter, which is especially useful if you are
inexperienced.
The further you push the throttle away from the rest position, the faster the scooter will go.
The intelligent speed controller minimizes the effects of slopes and different types of terrain.
The scooter user must be capable of driving a scooter safely. PGDT accepts no liability for losses
of any kind arising from failure to comply with this condition.
6 Precautions for Use
In the event of the scooter moving in an unexpected way RELEASE THE THROTTLE. This action will
stop the scooter in any circumstances.
6.1 Hazards
Do not drive the scooter:
Beyond restrictions indicated in your scooter user manual, for example inclines, curb heights etc.
In places or on surfaces where a loss of wheel grip could be hazardous, for example on wet grassy slopes.
If you know that the controller or other crucial components require repair.
Although the S-drive is designed to be extremely reliable and each unit is rigorously tested during
manufacture, the possibility of system malfunction always exists (however small the probability).
Under some conditions of system malfunction the controller must (for safety reasons) stop the
scooter instantaneously. If there is any possibility of the user falling out of the scooter as a
result of a sudden braking action, it is imperative that a restraining device such as a seat belt is
supplied with the scooter and that it is in use at all times when the scooter is in motion. PGDT
accept no liability for losses of any kind arising from the unexpected stopping of the scooter, or
arising from the improper use of the scooter or controller.
Do not operate the S-Drive if the scooter behaves erratically, or shows abnormal signs of
heating, sparks or smoke. Turn the S-Drive off at once and consult your service agent. PGDT
accepts no liability for losses of any kind arising from failure to comply with this condition.
Electronic equipment can be affected by Electro Magnetic Interference (EMI). Such interference
may be generated by radio stations, TV stations, other radio transmitters and cellular phones. If
the vehicle exhibits erratic behavior due to EMI, turn the controller off immediately and consult
your service agent. PGDT accepts no liability for losses of any kind arising from failure to comply
with this condition .
It is the responsibility of the scooter manufacturer to ensure that the scooter complies with
appropriate National and International EMC legislation. PGDT accepts no liability for losses of
any kind arising from failure to comply with this condition.

S-DRIVE –OPERATION PG DRIVES TECHNOLOGY
SK76745/10
14
The scooter user must comply with all scooter safety warnings. PGDT accepts no liability for
losses of any kind arising from failure to comply with this condition.
7 Safety Checks
The electronic circuits in the S-Drive have been designed to be extremely safe and reliable. The on-board microcomputer carries
out safety checks at up to 100 times per second. To supplement this safety monitoring you should carry out the following periodic
checks.
If the controller fails any of these checks, do not use the scooter and contact your service agent.
These checks should be conducted in an open space and a restraining device such as a seat belt
should always be used. PGDT accepts no liability for losses of any kind arising from failure to
comply with this condition.
7.1 Daily Checks
Throttle: With the scooter switched off, check that the throttle mechanism is not bent or damaged and that it returns to the rest
position when you push and release it. If there is a problem do not continue with the safety checks and contact your service
agent.
7.2 Weekly Checks
Throttle: Put the throttle to the full speed forward position and switch the scooter on. The scooter should not move. To
show you that you have switched the scooter on with the throttle already pushed, a TruCharge Trip type
status indicator will display 7 Bars, whereas a single bulb (or LED) type status indicator will flash seven times in
sequence.
If the scooter does move, contact your service agent.
Parking brake: This test should be carried out on a level surface with at least one meter clear space around the scooter.
Switch the scooter on.
Check that the status indicator remains on, or flashes slowly, after half a second.
Go to drive the scooter slowly in the forward direction until you hear the parking brake operate. The scooter
may start to move.
Immediately release the throttle. You must be able to hear the parking brake operate within a few seconds.
Repeat the test in the reverse direction.
Cables and connectors:
Check that all connectors on the scooter are securely mated, and ensure that all cables are free from
damage.
7.3 Servicing
To ensure continued satisfactory service, we suggest you have your scooter and controller inspected by your service agent after
a period of one year from commencement of service. Contact your service agent for details when the inspection is due.
8 Status Indication
Depending on the scooter model, the status indicator may be a single lamp (or LED) or a TruCharge battery gauge and
diagnostics display. Both types indicate the status of the controller.

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
15
A number of supposedly faulty controllers returned to PGDT are subsequently found to operate correctly. This indicates that many
faults are due to problems on the scooter rather than within the controller.
8.1 Single Lamp and LED Status Indicators
8.1.1 Status Indicator Steady
This indicates that all is well.
8.1.2 Status Indicator Flashes Slowly
The controller is functioning correctly, but you should charge the batteries as soon as possible.
Do not operate the scooter if the battery is nearly discharged. Failure to comply with this
condition may leave the user stranded in an unsafe position, such as in the middle of a road.
PGDT accepts no liability for losses of any kind arising from failure to comply with this condition.
8.1.3 Status Indicator Blinks On Every 5 Seconds
The controller has entered Sleep Mode.
8.1.4 Status Indicator Flashes Rapidly (even with throttle released)
The controller safety circuits have operated and the controller has been prevented from moving the scooter.
This indicates that there is a trip. Please follow this procedure:
Switch off the scooter.
Make sure that all connectors on the scooter are mated securely.
Check the condition of the battery.
If you can’t find the problem, try using the self-help guide in section 8.3.
Switch the scooter on again and try to drive. If the safety circuits operate again, switch off and do not try to use
the scooter.
Contact your service agent If a system trip occurs then a series of flashes, on the Lamp or LED Status Indicator, will
display the Trip Type. The Trip Type will be represented by a series of repeated flash sequences. The sequences will
mimic the TruCharge Status Indicator Trip Types. Refer to section 8.3.
E.g. When the LED flashes 6 times, pauses, then flashes 6 times again the controller is being inhibited.
8.2 TruCharge Indicator
The way in which the battery gauge should be read depends on whether the controller is driving, charging, in Sleep Mode or in
Trip Mode. Each case is explained below.
8.2.1 TruCharge Indicator Steady
If the TruCharge gauge shows red, yellow and green, the batteries are charged.
If the TruCharge gauge shows just red and yellow, then you should charge the batteries as soon as you can.
If the TruCharge gauge shows just red then you should charge the batteries immediately.
8.2.2 TruCharge Indicator Flashing Slowly
The controller is functioning correctly, but you should charge the batteries as soon as possible.

S-DRIVE –OPERATION PG DRIVES TECHNOLOGY
SK76745/10
16
Do not operate the scooter if the battery is nearly discharged. Failure to comply with this
condition may leave the user stranded in an unsafe position, such as in the middle of a road.
PGDT accepts no liability for losses of any kind arising from failure to comply with this condition
8.2.3 TruCharge Indicator Stepping Up
The scooter’s batteries are being charged.
8.2.4 TruCharge Indicator blinks on every 3.5 seconds
The controller has entered Sleep Mode.
8.2.5 TruCharge Indicator Flashing Rapidly
The controller safety circuits have operated and the controller has been prevented from moving the scooter.
This indicates that there is a trip. Please follow this procedure:
Switch off the scooter.
Make sure that all connectors on the scooter are mated securely.
Check the condition of the battery.
If you can’t find the problem, try using the self-help guide in section 8.3.
Switch the scooter on again and try to drive. If the safety circuits operate again, switch off and do not try to use
the scooter.
Contact your service agent.
If a system trip occurs you can find out what has happened by counting the number of bars that are flashing on the TruCharge
Indicator. Refer to section 8.3.
8.3 Self-Help Guide
Below is a list of self-help actions. Try to use the following table before you contact your service agent. Go to the number in the list
that matches the number of flashing bars and follow the instructions.

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
17
8.4 Slow or Sluggish Movement
If the scooter does not travel at full speed and the battery condition is good, check the position of the speed limiting control. If
adjusting the speed limiting control does not remedy the problem then there may be a non-hazardous fault.
Contact your service agent.
9 Battery Gauge
Depending on the type of scooter you have, the battery gauge may be a single bulb (or LED) or a TruCharge display. How to
read each type is described in the following sections.
The battery gauge is included to let you know how much charge is left in your batteries. The best way for you to use the gauge is
to learn how it behaves as you drive the scooter. Like the fuel gauge in a car, it is not completely accurate, but it will help you
avoid running out of “fuel”.
Depending on the type of scooter you have, the battery gauge may also show you the charging status of the batteries.
The battery gauge works in the following way.
When you switch on the controller, after half a second, the battery gauge shows an estimate of the remaining battery charge.
The battery gauge gives you a more accurate reading about a minute after you start driving the scooter.
If you are charging the batteries and the scooter type you have is able to show you charging status, this information is accurate 5
seconds after the charger is connected.

S-DRIVE –OPERATION PG DRIVES TECHNOLOGY
SK76745/10
18
When you replace worn out batteries, fit the type recommended by the scooter manufacturer. If you use another type the
battery gauge may be inaccurate.
The amount of charge in your batteries depends on a number of factors, including the way you use your scooter, the
temperature of the batteries, their age and the way they are made. These factors will affect the distance you can travel in your
scooter. All scooter batteries will gradually lose their capacity as they age.
The most important factor that reduces the life of your batteries is the amount of charge you take from the batteries before you
recharge them. Battery life is also reduced by the number of times you charge and discharge the batteries.
To make your batteries last longer, do not allow them to become completely flat. Always recharge your batteries promptly after
they are discharged.
If your battery gauge reading seems to fall more quickly than usual, your batteries may be worn out.
9.1 How To Read a Single Bulb (or LED) Battery Gauge
Refer to section 8.1 for full details.
9.2 How To Read a TruCharge Battery Gauge
Refer to section 8.2 for full details.
10 Pushing your Scooter
The scooter will be fitted with a freewheel mechanism which allows the scooter to be pushed if there is a fault or the batteries are
disconnected or not fitted.
Depending on the type of freewheel mechanism, then it may be possible for the scooter to
freewheel at potentially dangerous speeds. Therefore, do not push the scooter up or down inclines
on which you cannot stop or hold the scooter. Never sit on the scooter if the freewheel
mechanism is disengaged. PGDT accept no liability for losses of any kind arising from the scooter
being moved while the freewheel mechanism is disengaged.
11 Programming
If you cannot find a position on the speed limiting control that suits you, the controller can be programmed to meet your needs.
The controller can be programmed in two ways –with an SP1 Programmer or specialist PC software and interface cable.
The SP1 is a small hand-held unit that can be plugged into your controller to alter the program.
The PC Programmer is a piece of PC software and an interface cable. When the software is installed onto a PC, it can then be
connected to the controller by using the special interface cable. The controller can then be programmed using a windows type
environment
The programming tools may be included with your scooter. If they are not, your scooter distributor or service agent or scooter
manufacturer will be able to program your controller for you.
If you have a Programmer, read the user guide before you use it.
If you re-program your controller, make sure that you observe any restrictions given in your scooter user manual. Note any
changes you make for future reference.
Programming should only be conducted by healthcare professionals with in-depth knowledge of
PGDT electronic controllers. Incorrect programming could result in an unsafe set-up of a scooter
for a user. PGDT accept no liability for losses of any kind if the programming of the controller is
altered from factory preset values.

PG DRIVES TECHNOLOGY S-DRIVE –OPERATION
SK76745/10
19
12 Warranty
The S-Drive Scooter Controller is covered by a warranty period defined by the scooter manufacturer. For details of the warranty
period, please contact your service agent.
The warranty will be void if the S-Drive Scooter Controller has:
•Not been used in accordance with the S-Drive Scooter Controller Technical Manual, SK76745.
•Been subject to misuse or abuse.
•Been modified or repaired by non-authorized persons.
The warranty will be void if the S-Drive has not been used in accordance with the S-Drive
Technical Manual SK76745, the S-Drive has been subject to misuse or abuse, or if the S-Drive
has been modified or repaired by unauthorized persons.
13 Servicing
All repairs and servicing must be carried out by authorized service personnel. Opening or making any unauthorized adjustments
or modifications to the controller or its components will invalidate any warranty and may result in hazards to yourself or other
people, and is strictly forbidden.
PGDT accept no liability for losses of any kind arising from unauthorized opening, adjustment or
modifications to the S-Drive Scooter Controller.
If the S-Drive Scooter Controller is damaged in any way, or if internal damage may have occurred
through impact or dropping, have the product checked by qualified personnel before operating.
PGDT accepts no liability for losses of any kind arising from failure to comply with this condition.

S-DRIVE -INSTALLATION PG DRIVES TECHNOLOGY
SK76745/10
20
CHAPTER 2 –INSTALLATION