VEE-ARCPWM 7000 AC Drive Regulator Board, Variant -11, Plug-In Control Card

Product Description

What this part is

A Vee-Arc PC7000-11 regulator board, the control card from the Vee-Arc PWM 7000 series AC variable frequency drive. The regulator board takes the speed reference, runs the volts-per-hertz regulator, generates the pulse-width-modulation firing pattern for the output transistors, and handles the drive’s protection and fault logic. It is an AC PWM inverter drive board from the PWM 7000 family, not a DC drive card.

Decoding the part number

PC is Vee-Arc’s prefix for a plug-in printed circuit card. 7000 is the PWM 7000 drive family; the related Micro 7000 range is a different and later product, and boards do not cross between them. 11 is the board variant. Vee-Arc used suffix variants on the same base card, including PC7000-11, PC7000-U11 and PC7000-UQ10, and they are configured differently. Vee-Arc also carried a parallel 900-series numbering for the same cardset: 900-709 is catalogued as a PWM 7000 AC drive regulator board and 900-760 as the PWM 7000 DC braking board. A 900-number in machine documentation refers to the same family of hardware under a different scheme.

Brand lineage and support status

Vee-Arc drives were made by Vee-Arc Corporation and sold as Furnas Electric’s variable frequency drive range, which is why the same boards appear under both names. Siemens acquired Furnas Electric in 1989 but did not acquire the rights to the Vee-Arc drive product, so the line was orphaned at that point. There is no OEM behind it, no factory spares channel, and no manufacturer technical support. A running PWM 7000 is kept running with surplus boards and independent repair houses, and there is no upgrade path within the family.

Published specifications

Function: regulator and control board for an AC PWM variable frequency drive. Platform: Vee-Arc PWM 7000 series AC drive. Board variant: -11. Form factor: plug-in printed circuit card, drive chassis. Brand lineage: Vee-Arc Corporation, sold as the Furnas Electric variable frequency drive line. Manufacturer part number: PC7000-11.

Mounting data

The board is a plug-in card in the drive chassis, connected by ribbon cables and plugs. Drives of this generation set acceleration, deceleration, current limit and V/Hz slope with trimpots on the regulator card rather than in software, and a fresh board is at factory settings. The board also carries jumper links that form part of the machine-specific configuration.

Quantity and configuration

One regulator board. Not included: the drive chassis, power stage, DC braking board, other cards from the cardset, ribbon cables, connector kits, fuses and any documentation.

Interchange guidance

The suffix determines interchange. PC7000-U11 and PC7000-UQ10 are related regulator boards from the same family but different variants, not drop-in replacements. Micro 7000 drives, such as the MCH411K1, use different hardware. Also written PC700011, PC 7000-11, PC-7000-11, PC7000 11 and VeeArc PC7000-11, and found under the Vee-Arc, VeeArc, Vee Arc and Furnas Electric names.