S-DRIVE – APPENDIX - A PG DRIVES TECHNOLOGY
SK76745/10
8.1 On/off switch
S-Drive products require an on-off switch to be provided by the scooter manufacturer
8.2 Off-state current
S-Drive products draw very low currents when switched off, typically about 1.0 mA with a maximum of 2.0 mA. Providing the
scooter has no other circuitry that is connected to the battery other than the S-Drive and its recommended circuitry, it should
meet the requirement with a 6 Ah battery or larger.
8.3 Control-signal at switch-on
S-Drive products meet the requirement if the “throttle operated at power up” setting is set appropriately.
8.4 Safe operation as battery is depleted
S-Drive products meet this requirement.
8.5 Over-discharge protection
S-Drive products can provide a visual and/or auditory indication that the battery is nearing depletion that equal or exceed the
cut-off voltage range specified in the standard. To support this it is necessary for the scooter manufacturer to provide appropriate
visual and/or auditory indicators.
8.6 Over-voltage protection
S-Drive products meet this requirement.
8.7 Soft-stop when switching off
S-Drive products meet the requirement if the “soft stop” setting is set appropriately.
8.8 Measuring devices
S-Drive products meet this requirement. PGDT can provide information concerning conditions that affect the accuracy of the
battery gauge.
8.9 Charge inhibit
S-Drive products provide an inhibit input that can be used to prevent driving. To support this it is necessary for the scooter
manufacturer to provide appropriate connections to the battery charger.
8.10 Charging voltage drop
S-Drive products provide a very short low-resistance path between the charging connector and the battery terminals. The total
path resistance in installed S-Drive systems will be dominated by the wiring and connections provided by the scooter
manufacturer. It should be noted that it is only necessary to meet the voltage drop requirement where the battery charger is not
supplied with the scooter or specified for use with it.
8.11 Non-powered mobility
Not applicable to S-Drive products.
8.12 Brakes
Single-fault safety of S-Drive products includes the means for activating the solenoid brakes, so they support conformity with the
requirement. However, conformity of the scooter depends on other aspects of the braking system (such as the construction of
the parking brakes) so it is important for the scooter manufacturer to assess the entire activation path for the brakes.
8.13 Battery enclosures
Not applicable to S-Drive products.
8.14 Symbols
Not applicable to S-Drive products.
8.15 Safety of moving parts
This requirement does not apply directly to S-Drive products, however they support conformity with this requirement by stopping
movement of the drive motor when the throttle is released.
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