Control Systems


The Schumacher Elevator SS5–PLC hydraulic elevator control system is specifically designed to meet the demands of the hydraulic elevator industry.

The SS5–PLC control is capable of handling single and multi–car group operation. The Programmable Logic Control (PLC) has proven to be dependable in many industrial control environments and applications. All safety functions are backed up by “self–guided” relays to provide additional protection and redundancy checking. All input and output functions of the PLC can be monitored and diagnosed using the LED indications. An optional human interface diagnostic tool is available for additional field troubleshooting and service. PLC parts can be purchased from a third–party vendor.


  • Non–proprietary
  • Industry proven technology
  • LED indicators and diagnostics
  • Replacement parts available from third-party vendors
  • CSA Certified to B44.1 and ASME A17.5
  • Lifetime technical phone support

Controller Features

Standard Features

  • Non–proprietary; uses standard PLC parts and relays
  • Code compliant (CSA certified to the B44.1 and ASME A17.5)
  • Standard controls are provided with hardware for 2–4 landings
  • Standard controls are provided with hardware for front and rear staggered door openings
  • Independent service
  • Hall access
  • Serial Car/Hall Lanterns and P.I.
  • Time/date stamped diagnostics
  • Fire phase one and two fireman’s operation
  • Photo edge nudging
  • Electronic motor starting
  • Free lifetime technical support
  • Absolute Landing System

Optional Features

  • Group control
  • Code Blue hospital service
  • Battery lowering using standard UPS systems
  • Load weighing and anti–nuisance
  • Card reader and floor lock out
  • Emergency power
  • Optional diagnostic tool
  • Electronic closed loop valves
  • Time clock telescopic jack resync
  • Touch screen diagnostic tools
  • STS-1 tape selector landing system

Absolute Landing System

The Absolute Landing System uses a dual camera architecture which provides precise speed and position of the elevator by reading a coded tape. The dual camera reader is SIL3-rated, allowing this device to take the place of multiple switches in a traditional landing system such as the STS-1 version. Slowdowns, floor levels, and other features are accessible through the controller interface for quick and easy final adjustments.

Sts-1 Landing System

The STS-1 elevator landing system installs quickly and is highly reliable. It is our legacy landing system and is available for hydraulic and traction modernizations and repairs.

Magnetic tape is applied to the 3" wide steel tape wherever slowdown, leveling, and stopping are required in the hoistway. The selector heads are held in position by nylon guides that follow a steel tape mounted to the rail system at the top and bottom of the hoistway. Stainless steel tape is also available.
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