SmartDriveD110/9Eurocard Stepper Motor Drive – 11.0 A Peak / 7.8 A rms, 27-94 V DC, Half/Full Step, 3U x 160 mm 9HP Module, DIN 41612 Type D

Product Description

Decoding the order code

D110/9 breaks down simply

D – D series, the half/full step family (the microstepping equivalent is the DM series)110 – 11.0 A maximum peak winding current, i.e. 7.8 A rms/9 – 9HP module width, 1.8 inches, the standard Eurocard width for this familyFront-panel legend on the card confirms the identity: the sd SmartDrive logo, D110, and six status LEDs – supply fault, over temp, W1 fault, W2 fault, energised, phase 0.

Published specification

Winding output: 11.0 A peak / 7.8 A rms maximum; 3.5 A peak / 2.5 A rms minimum settingWinding (motor) supply: 27 V min, 85 V typical, 94 V max DC, 250 mA standbyLogic supply: 15 V min, 24 V typical, 33 V max DC, 80 mAWinding supply fuse: 8 A fast blowResolution: 200 / 400 steps per revolution on a 1.8° motor (full / half step)Step rate: 0 – 500 kHzMinimum motor inductance: 0.5 mHPCB: 160 x 112 mm; drive module 172 x 42 x 112 mm (9HP)Mounting: 3U high Eurorack, or on PCB postsBackplane connector: DIN 41612 type D, 32 wayCooling: natural convection (only the 16.5 A D165 needs a fan)Power stage: chopped MOSFET outputProtection: CDP – Comprehensive Dynamic Protection, reacting to motor winding faults within 5 microseconds

Why you would specify this rather than a modern box drive:
The format is the point. At 9HP wide, eight of these plus a power supply fit in one 19-inch 3U shelf. If you are maintaining an existing multi-axis rack – a stage-motion system, a test rig, a semiconductor handler, a telescope drive – the mechanical envelope, the DIN 41612 pin-out and the 85 V bus are all fixed by the rack you already own. A modern standalone drive does none of that without a rebuild.

Current setting is adjustable and changeable on the fly. The D series lets you set winding current across a wide range and change it during operation, with automatic current reduction to 50 % one second after motion stops if that link is fitted, plus a Boost input that raises current by a third for the acceleration phase. The practical consequence: you can run a motor cool at holding and still get the torque you need to accelerate, which is what kills stepper motors when it is not available.

Half/full step vs microstepping. The D series gives 200/400 steps per revolution. If you need smoother low-speed motion or finer positioning, the DM series in the same form factor microsteps to 51,200 steps/rev binary or 50,000 decimal – DM110/9 is the direct microstepping counterpart with identical current and supply ratings. The two are physically interchangeable in the rack. Choose D if your controller generates the interpolation and you want the simplest, most robust power stage; choose DM if you want resolution from the drive.

CDP is not marketing. Comprehensive Dynamic Protection responds to a winding short or open within 5 microseconds and latches the drive out, signalling on the W1 fault / W2 fault LEDs and the Fault output. On an 11 A bipolar chopper running from an 85 V bus, that is the difference between a nuisance trip and a destroyed output stage.

Control interface

Open-collector NPN inputs at 24 V, 10 mA: Clock (falling edge advances one step or half step, 500 kHz max), Direction, Energise (motor current on/off), Boost (+33 % current), Reset (clears a CDP shutdown and Phase 0), and Set Current for an external current-setting resistor. Open-collector NPN outputs: Fault and Phase 0. Configuration links on the card select external reset, permanent energise, external current control, automatic current reduction and permanent boost.

Brand and supply history – read this before you search:
These cards were designed and built by SmartDrive Limited in the United Kingdom, a flagship product for them from the mid-1980s. SmartDrive Limited closed, and in January 2017 Mclennan Servo Supplies purchased the design and manufacturing rights to the entire D- and DM-series line. Mclennan’s current D110/9 is a form-fit replacement using equivalent components, manufacturing methods and QC, so the part remains available new – but under the Mclennan name, not SmartDrive. If you are searching for a discontinued SmartDrive card, Mclennan is where the trail goes.

Note also that this is not a Parker Digiplan product. Digiplan (later Parker Hannifin’s Digiplan Division) built its own Eurocard stepper drives – the SD and 10xx series – which are different products with different pin-outs. The original CS record listed the brand as DIGIPLAN; that has been corrected to SmartDrive, on the evidence of the sd logo on the front panel and Mclennan’s own statement that D110/9 is a former SmartDrive model.

What is included

The drive card only, in its factory antistatic bag, with the front panel and card guides as pictured. No rack, no backplane, no power supply, no mating DIN 41612 connector, no documentation. A SmartDrive SA14 or similar 3U rack with an 85 V DC nominal winding supply and a 24 V logic rail is the intended host.

Condition

New, unused old stock, still sealed in the antistatic bag. Not functionally tested. Made in the United Kingdom.