Dynatest FWD - Battery Separation Relay (Provided if Needed)

2017.06.19 FwdMan2.8.17.docx 2-7
least 120 Amp. output capacity, preferably 150 Amp.). IF NOT, it could be REPLACED by a
heavier alternator, if available/possible.
A battery separating RELAY should be used (see below).
2.1.7 Battery Separation Relay (provided if needed)
IF (and ONLY if) the FWD/HWD System is powered from the EXISTING vehicle alternator
(or its replacement), a special, heavy duty battery separation RELAY should be installed (see
Note 2.2.3).
2.1.8 Electronics Buffer Battery (provided if required)
For buffering of the alternator generated 12VDC power supply to a 12VDC-to-110/220VAC
Power Inverter (see 2.1.11), an additional battery should be mounted in the vehicle cabin.
Preferably use a maintenance-free (“add-no-water”) 12V battery of 40-60 Ah capacity
(standard size in most small passenger vehicles) (see Note 2.2.3).
2.1.9 Heavy Fuse Box (provided)
A heavy fuse box should be installed for protection of the 12V power circuits (see Note
2.2.3).
2.1.10 12V Power Socket for Trailer (provided)
A heavy, 2-pin (female) power output socket for powering/charging of the trailer 12V electro
hydraulic system and buffer battery should be mounted close to the towing hitch ball (like the
lights output socket, but preferably to the opposite side of the ball (see Note 2.2.3).
2.1.11 Power Inverter (provided if needed)
If the Computer requires 110/220VAC powering, a 12VDC-to-110/220VAC Power Inverter
should be installed (see Note 2.2.3).
2.1.12 Throttle Regulator
If the Vehicle alternator capacity is in the low end, the vehicle engine should preferably be
fitted with a manual or automated throttle regulator, so that the engine UUidlingUU RPM can be
raised to 1000-1500, to ensure adequate 12VDC power supply from the alternator during
testing. On most new vehicles, this is difficult or not possible, in which case it is important to
use an alternator with an output capacity in the high end.
2.1.13 Alarm Connection Plug (provided)
A 3-pin DIN plug should be used for connection of the vehicle’s PARK indicator OR hand
brake (emergency brake) indicator to the ALARM socket on the Remote Control Box. This
enables the system to give a warning ALARM signal AND to automatically raise the loading
plate, if the vehicle is set into DRIVE (or the emergency hand brake is released) during testing
(see Note 2.2.4).
2.1.14 Emergency Switch
An emergency switch (with a momentary UUbreakUU contact) may be connected in series with the
above mentioned ALARM connection for immediate raising of the loading plate in an
emergency situation. This switch could e.g. be dash mounted and have a large, visible push
knob (see Note 2.2.4).