Frequently asked questions
What is the maximum control voltage and logic input voltage for the ATS22....S6 and S6U soft starters?
28 September 2021
Logic and Control Voltage specifications for ATS22... S6/S6U Soft Starters.
Control voltage and logic input max voltages allowed.
The S6 version was primarily designed for the European market and has control voltage range (for terminals CL1 and CL2) of 187V AC to 264.5V AC (220 -15% to 230 +15%)).
The softstart then generates a 24VDC power supply (24VDC +/- 6 V) that is limited to 42 mA. This supply can be measured between terminals +24 and COM on the control terminal strip and should be present when the 220V power is supplied to the softstart.
The S6U was designed and qualified for the standard NEMA range, which is: 103.5 ... 126.5V AC and is primarily used in the US.
The allowed voltage on ATS22•••S6U control terminals (input CL1 and CL2) is from the range: 93.5V ... 126.5V, 50/60 Hz (110 -15% to 115 +10%)