Page 71 of 102
TVL 351
ISSUE 15
12. Traction Lift Installation Guide
12.1. Precautions
AUTOTUNE - An Autotune MUST be carried out during installation. See Auto-tune section and
CT E300 Manual for details.
SAVING SETTINGS (E300 Drive) - The settings for any changed parameters will be lost when
the drive is powered off. Ensure SAVE procedure is carried out after changing parameters
Select “Save Parameters” in any zero menu #mm.00, enter, and then press the red reset key.
ROTATION CHECK - If the pulse encoder is incorrectly connected, various faults may trip & the motor may run
slowly with high current, or become unstable. Ensure the rotation check is carried out. Monitor #J51. Roll/drive lift
UP. If no feedback, check encoder & connections. If value is negative, swap A+ & B+, A- & B-, then retest.
OPEN LOOP - Running in Open Loop is not possible with the drive in RFC-S (Closed loop Servo) mode.
12.2. Introduction
The E300 regulator can be adapted to run in various modes:
RFC-S: Closed loop control of a Servo / Permanent Magnet (PM) motor, normally used on gearless
applications.
RFC-A: Closed loop control of an Induction motor, this can be geared or gearless.
Open Loop: Voltage / frequency speed control of an induction motor without feedback, slow speed geared
applications. (RFC-A Sensor less)
All 3 modes use a combination of frequency, voltage and current control to affect the motor's torque and flux
producing components.
The drive is designated for use on lift applications and because it is a digital drive that models the motor
characteristics requires minimal manual tuning by the lift installation engineer.
The regulator is designed to accept 3 phase AC power, rectify and output controlled 3 phase AC power to the motor
through the transistorised inverter section under the instructions provided by the sophisticated signal/torque/flux
control processing section.
Feedback (motor speed and orientation of the rotor) is obtained by a rotary encoder providing incremental
sine/cosine signals and absolute position via a communications channel, or just incremental pulses in the case of
RFC-A mode. The encoder is connected directly to the motor.
Braking is achieved by absorbing the lift's kinetic energy in the DC bus and if necessary absorbing any surplus
energy by the use of dynamic braking resistors switched through a dynamic braking module.
Direction and control signals are via a serial communication loom from the Ethos Two lift control microprocessor.
Speed is usually via the analogue pattern loom, giving direct floor approach.
12.3. Step by Step Installation Sequence
The following sequence should be followed when installing the panel and commissioning the lift.
The instructions, which follow, are intended as a guide to site testing and trimming and should be read in their
entirety before proceeding. The commissioning engineer has the sole responsibility for taking adequate safety
precautions during the carrying out of these procedures:
Wiring and General Precautions
Do not touch the circuit components after turning off the main current power until the
CHARGE light is extinguished. Do not connect or disconnect the wiring or connectors
whilst the power is on. The main drive earth terminal PE must be grounded.
Do not connect output terminals U, V, W to the AC mains incoming supply.
Do not conduct high-voltage insulation tests on the regulator. Isolate totally the
regulator if insulation tests are conducted on the panel.
Mains Wiring and Motor Wiring
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