PRODUCTS

The GEE Variable Voltage Variable Frequency system used on geared elevators provides the ultimate in performance at reduced operating costs.
Incoming mains AC power is first rectified to DC and then inverted provide controlled AC current to the elevator drive. precision monitoring of motor speed and car direction, position and load enable the pulse width of the AC power supplied to the motor to be adjusted to ensure that elevator speed is maintained very accurately to an ideal profile.
Pulse width modulation control of AC motors has tremendous advantages compared with the older servo control techniques, namely:

1.⁠ ⁠Total control at all stages of the motion cycle.
2.⁠ ⁠A consistent fully adjustable smooth ride.
3.⁠ ⁠Excellent levelling accuracy under all conditions.
4.⁠ ⁠A higher power factor.
5.⁠ ⁠Lower starting currents.
6.⁠ ⁠Energy saving through reduced power consumption.
7.⁠ ⁠Quieter, cooler running.