DESCRIPTION AND FEATURES
The SELECT-Cycle converter is intended to power three-phase, high-cycle vibrators using a standard, single-phase, 50/60 Hz,
230V power source
Internally, the converter uses a Variable Frequency Drive (VFD) The VFD converts this single-phase power to the required
three-phase 133/200 Hz power required by high-cycle vibrators
The VFD does this by using the single-phase power to charge a DC bus It then switches the power on and off very rapidly to
simulate the sinusoidal voltage required by high-cycle vibrators
Three models are available:
• Model #SC1420 has a plug suitable for a four-prong, turn-locking, 20 A, Nema L1420R receptacle
• Model #SC1430 has a plug suitable for a four-prong, turn-locking, 20 A, Nema L1430R receptacle
• Model #SC620 has a plug suitable for a three-prong, turn-locking, 20 A, Nema L620R receptacle
These converters are identical except for the input power plug used A minimum of a 15 A supply is required
The wiring for the input plugs is as follows:
Wire Color Plug Terminal
Purpose
White
X
–115V AC
Black
Y
+115V AC
Green
G
Ground
Not Used
W
Not Used
The frequency of the supplied voltage determines the speed of high-cycle vibrators This converter outputs three frequencies:
133, 180 and 200 Hz These frequencies correspond to vibration speeds of 8000, 10,800 and 12,000 vpm Select this speed
with the SELECT-Cycle rotary switch, which can also be switched to the OFF position
The vibrators plug into two Hubbell (#HBL7410BG) or Leviton (#7420CR), 20 A, 4-pole receptacle outlets Two plugs that fit
these receptacles are Pass & Seymour Model #7411SS and Hubbell #7411GBC
OPERATION
Startup
1 Make sure that the equipment is in good safe working order
2 Check all cables, plugs and electrical outlets to verify they are not damaged
3 Make sure that the converter rotary switch is in the OFF position
4 Make sure that the vibrators are turned OFF
5 Apply power to the converter
6 Set the converter to the desired speed
7 Turn the vibrators ON and OFF as desired
Shutdown
1 Turn OFF the vibrators
2 Turn the rotary switch on the converter to the OFF position
3 Unplug the converter or turn OFF the power to the converter
Description and Features
Page 5
December 2018
VBR-UM-02429-EN-03
