S200: Using a Voltage Doubler Mode Drive

Figure 1. Main Power Line Connection of the Voltage Doubler Mode Drive

In the S2xx50 AC input voltage doubler drives, AC line L3 is shorted to the center point of the two series connected bus capacitors as shown in Figure 1. For voltage doubling, connect single-phase 120 VAC to J1-9 L1 and J1-7 L3. On the same unit, connecting 240 VAC to J1-9 L1 and J1-8 L2 gives standard single-phase full wave rectification. In both cases, the result is a 320 VDC nominal bus voltage.

Three-phase AC line operation is not possible with the S2xx050 AC input voltage doubler models. In fact, connection to a three-phase source will damage the drive. Please use the standard S2xx60 AC input version of the product.

When doubling a 120 VAC line, the drive continuous power specification is derated to about 70% of standard single-phase ratings. The following table gives the power specifications for 120 VAC voltage doubled operation. Refer to the ratings in Voltage Sag Standard for 240 VAC single-phase operation.

S2xx50 AC Line Voltage Doubling Drive Power Specifications

120 VAC Voltage Doubling	S20350	S20250
Peak Output Current (ARMS) 0 to 40°C Ambient	9.0	4.5
Minimum Peak Current Time Starting from 0 Amps	3.0	3.0
Cont. Output Current (ARMS) 0 to 40°C Ambient	3.0	1.5
Continuous Output Power (watts)	750	350
Peak Output Power (watts)	2400	1200
RMS Line Current at Continuous Output Power (RMS)	10	5
Fusing - Line Inputs	MDA-15	MDA-10

WARNING: S200 units with the voltage doubling option manufactured before June 2004 have the function of L1 and L3 reversed. Using 240 VAC on old voltage doubled units with this new documentation will lead to catastrophic failure of the drive.

Requirements for Safe Operation of the Drive
It is the machine builder’s responsibility.

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