Atlas Copco ZR 110 VSD (VSD⁺ FF) Oil-free Air Compressor

The Atlas Copco ZR 110 VSD is the 110 kW (150 hp) water-cooled oil-free compressor that carries two quite different pressure duties in one product line. Its standard VSD data is published at 8.6 and 10.4 bar(e), and the ZR 110 VSD⁺ adds a separate 13 bar(e) table with its own envelope rather than a derated copy of the first. That second table is what lets a single ZR 110 VSD feed a general 7 bar(e) header and a high-pressure consumer such as a bottle blowing or mould pressing section. The air path is oil-free throughout, so the stream arrives at both duties without lubricant carryover, and compression heat goes to the site’s water circuit.

The ZR 110 VSD at 8.6 and 10.4 bar(e)

On the single-inverter VSD each pressure class is documented by a Minimum, an Effective, and a Maximum row. The Minimum row gives the lowest pressure the drive holds and the flow band there, the Effective row gives the 7 or 9 bar(e) point where a general header runs, and the Maximum row gives the rated top pressure. The ZR 110 VSD installed motor is 110 kW (150 hp) across both classes.

The work station reading is 74 dB(A) for the ZR 110–160 (VSD) group with the cooling-air ducting on the outlet grating included. On the ZR 110 VSD, note how the 10.4 bar(e) Minimum starts at 6 bar(e) and 168 l/s while the 8.6 bar(e) Minimum starts at 4 bar(e) and 101 l/s: the higher class gives up low-flow reach to hold a higher setpoint, which is the comparison worth making before the pressure is fixed on an enquiry.

Pack and Full Feature Output at 10.4 bar(e)

The ZR 110 VSD⁺ moves the same 110 kW (150 hp) class onto the dual NEOS drive and is offered as a Pack unit and as two Full Feature builds, iMD and iMDG, each with the rotary drum dryer integrated. The published 10.4 bar(e) rows of the ZR 110 VSD for all three builds are set out below.

The ZR 110 VSD machine in Pack form weighs 2500 kg on a 2030 mm frame, 1660 mm wide and 2000 mm high. The Full Feature (iMD) build extends the length to 3430 mm at 3400 kg, and the Full Feature (iMDG) build holds that same 3430 mm length at 3700 kg. The ZR 110 VSD⁺ reads 68 dB(A) at the work station, against 74 dB(A) on the single-inverter VSD.

The Separate 13 bar(e) Envelope

Where high pressure is needed, the ZR 110 VSD⁺ is also published at 13 bar(e) as a Pack unit, with a Minimum point at 9 bar(e) / 131 psig and a Maximum at 13 bar(e) / 189 psig. This is a distinct ZR 110 VSD table with its own measured flows.

The comparison that matters is at the top end: the 10.4 bar(e) Pack Maximum reaches 77.6–276.5 l/s, while the 13 bar(e) Pack Maximum reaches 75.6–232.2 l/s. A site that needs the higher pressure on a ZR 110 VSD accepts roughly 44 l/s less at the ceiling and gains a machine that can hold both duties. The 68 dB(A) reading applies to the 13 bar(e) variant as well.

Two Stages, Water Cooling, and the Dryer

Inside the ZR 110 VSD the air is filtered at the inlet, raised to an intermediate pressure in the first stage, passed through an intercooler and moisture separation to remove condensate, and brought to final pressure in the second stage. Because the coolers are water-cooled and sit within the 2030 mm Pack frame, the base build is the shortest of the three and fits machine rooms where wall-to-wall space is already committed. Heat goes to the tower, a closed circuit, or a heat recovery loop.

In both Full Feature forms a desiccant drum splits its surface between drying and regeneration, keeping treated air leaving the canopy continuously. The connections between the compression and dryer sections are made before delivery, so site work reduces to the water circuit, the electrical supply, and the air main. The iMD build carries the dryer at 3400 kg and the iMDG build at 3700 kg on the same 3430 mm frame; the choice between them is a configuration question rather than a flow question, since their published rows match.

Control sits with the Elektronikon Touch, which plans service, warns ahead of a trip, and reports the state of the ZR 110 VSD over the network, while the NEOS inverter stays cool as the stages are balanced.

Matching the ZR 110 VSD to a Mixed-Duty Site

Plants with water already running past the compressor room get the most from the ZR 110 VSD: breweries, chemical works, and large manufacturing floors with a tower loop in place. The 2030 mm Pack frame and 2500 kg base mass avoid foundation work on a standard industrial slab. Mixed-duty sites are the stronger case: one ZR 110 VSD can hold the general header through its Effective bands and still serve a high-pressure island from the 13 bar(e) table, so the small dedicated compressor disappears. Where dry air is specified at the outlet, the ZR 110 VSD Full Feature builds take the dryer tower row out of the layout entirely.

Questions Buyers Ask About the ZR 110 VSD

What does the 13 bar(e) ZR 110 VSD⁺ give up at the top end?

Its Pack Maximum is 75.6–232.2 l/s against 77.6–276.5 l/s on the 10.4 bar(e) Pack. In return the machine holds 13 bar(e) / 189 psig at Maximum and starts its Minimum point at 9 bar(e) / 131 psig.

Which build should I order for a 7 bar(e) header?

All three ZR 110 VSD⁺ builds cover it. At the Effective point the Pack is published at 78.8–330.3 l/s and both Full Feature builds at 79–330 l/s, so the choice turns on the integrated dryer.

Does the motor rating change across the speed range?

The ZR 110 VSD Pack table lists 110 / 150 at Minimum, 111 / 150 at Effective, 112 / 150 at the 9 bar(e) point, and 113 / 150 at Maximum, in kW / hp. The VSD tables list a flat 110 kW (150 hp).

How much length does the integrated dryer add?

The ZR 110 VSD Pack frame is 2030 mm long at 2500 kg. Both Full Feature builds are 3430 mm long, at 3400 kg for iMD and 3700 kg for iMDG, all 1660 mm wide and 2000 mm high.

Can one ZR 110 VSD feed a blowing line and a general header together?

Yes. The ZR 110 VSD 13 bar(e) variant exists for exactly that split, with its Minimum point at 9 bar(e) and its Maximum at 13 bar(e), while the 10.4 bar(e) tables cover the general header duty.

What is the flow at the 9 bar(e) point?

The ZR 110 VSD⁺ Pack is published at 78.6–299 l/s there, and both Full Feature builds at 79–299 l/s, all at 130 psig on the imperial column.

Where the ZR 132 VSD Takes Over

When the profile grows past the 345.2 l/s ceiling of the ZR 110 VSD⁺ Pack, the next water-cooled step is the Atlas Copco ZR 132 VSD (VSD⁺ FF) Oil-free Air Compressor in the 132 kW (175 hp) class. Tell us the machine you are replacing and the pressure each consumer needs, and we will confirm the ZR 110 VSD branch before we quote the configuration.