Sunrise Medical Power Chairs – Details of Controller Program Inhibit functions

The following is a short guide on how Inhibit functions operate on Sunrise Medical Power Wheelchairs.

Sunrise Medical does not recommend any changes to the set up of these functions.

Only authorised personnel should carry out programming or reprogramming of controllers.

Certain features of power wheelchairs are activated through the joystick control which in turn allows power to an actuator which moves the backrest recline from upright to recline position; the seat tilt from a horizontal to a tilted to a position; seat riser from low position to a high position. Reversing the joystick will activate the actuator in the opposite way to return the actuator to its original setting.

To ensure that the wheelchair remains in a stable position when the powered actuators change the seated position of the user there are some controller functions that are enabled to either reduce the speed (creep speed) of the wheelchair or to disable forward/reverse(lock out) movement completely. These are known as Drive Inhibits.

For the following Sunrise Medical power chairs, Rumba Modular, Tango, Salsa R, Salsa M, Groove R/F/M, Jive R/F/M and Jive FXL with user mass below 178kg (28 stone),the situations when the Drive Inhibits are activated are described below.

Drive Inhibits

Powered accessory / Drive Inhibit Enabled / Speed when Drive Inhibit activated
Backrest Recline only / no inhibit activated / No changes
Seat Tilt Only / creep speed activated / Speed reduction
Seat Riser only / creep speed activated / Speed reduction
Seat Tilt and Backrest Recline / creep speed activated / Speed reduction
Seat Riser and Backrest recline / creep speed activated / Speed reduction
Seat Tilt and Seat Riser / Creep speed is activated by both settings and Drive Lockout is enabled / The wheelchair will not move forward or backwards in response to joystick movement.
Seat Tilt, Seat Riser & Backrest Recline** / Creep speed is activated by both settings of the seat tilt and seat riser and Drive Lockout* is enabled / The wheelchair will not move forward or backwards in response to joystick movement.See ** below

*Drive Lockout (Zero speed) will be activated when two drive Inhibits are activated

Creep Speed + Creep Speed = Zero Speed (Lockout)

The fitting and use of powered legrest functions (operated through the joystick) will not change any of the above conditions

Inhibit switch positions

The Drive Inhibits are detected by inhibit micro switches which activate when the powered seat function moves furthest away from the most stable seat position (upright position).

The micro switch positions are based upon the results of stability testing done on power wheelchairs prior to product introduction. They are positioned to account for worst case configurations regarding stability.

Sunrise Medical advises that no changes should be made to the inhibit switch positions or their program settings.Any changes made without full consideration could result in making the wheelchair unstable with the potential for serious injury or even death to the user.

** Actuator Inhibits – these only occur in one configuration as follows:

If the wheelchair is fitted with a combined seat tilt, seat riser and backrest recline function then the backrest recline actuator inhibit lockout will be enabled when the seat tilt and seat riser lockout is activated. This prevents further reclining movement of the actuator and the actuator can only be moved to the upright position.

Actuator Connections

On all Sunrise chairs, there is a standard connection protocol for actuators into the various modules, as detailed below. This is helpful in tracing back which actuator is connected into which actuator port:

VR2

VR2 has 2 x actuator connections. These can be used for any of the following combinations:

Tilt & Lift

Tilt & Recline

Lift & Recline

2 x powered legrests

Because of the different variants available, there is no standard protocol as to which actuator is plugged into which port. It will depend upon which of the above configurations is used.

R-Net Power module

R-Net power module (90A) has only working actuator port, port 1, even though there are 2 physical ports on the module. This actuator port can be used for any of the below:

Tilt only

Lift only

Recline only

Because of the different variants available, there is no standard protocol as to which actuator is plugged into which port. It will depend upon which of the above configurations is used.

NB. The R-Net 120A controller has no functioning actuator ports on the module

R-Net ISM

The R-Net ISM has 6 possible actuator connections. In all cases, the following table of connections applies:

Actuator / ISM Channel
Recline / Channel 1
Tilt / Channel 2
Lift / Channel 3
Right Legrest / Channel 4
Left legrest / Channel 5
Both legrests / Channel 4 and Channel 5

Actuator Loom Configurations

The following lists the standard actuator looms and inhibit plugs that are used with different Sunrise wheelchairs in their different configurations:

Salsa MVR2 – UK Build

Actuator configuration / Item 1 / Item 2 / Item 3 / Item 4 / Item 5
Drive Only / 060665
Tilt Only / 015580 / 060663 / 020063-040
Lift Only / 015580 / 060663 / 020063-100
Recline Only / 015580 / 060663 / 020063-040
Lift and Tilt / 065093 / 060663 x 2
Tilt and Recline V1 / 060321 / A1 = 060663
A2 = 060389 / 060392 x2 / 020063-040 x2
Tilt and Recline V2 / 015580 / 015586 (recline)
060663 (tilt) / 020063-040 x2
Lift and Recline / 065093 / 060663 x 2 / 020063-040 (may need)
Powered ELR and ALR / 060665 / 015586 x 2 / 020063-120 x 2

Note – Resistor networks are contained within loom 060663

Salsa M R-Net – UK Build

Drive only / 060665
Tilt Only / 015580 / 060663 / 020063-040
Lift Only / 015580 / 060663 / 020063-100
Recline Only / 015580 / 060663 / 020063-040
All combinations of Lift / tilt / recline / 065096 / 015585 x 1 or 2 (Use to link out missing tilt or recline) / 060393 x 1 (Use to link out missing lift actuator) / 020063-160 x2 (Tilt and Recline. Not required on lift)
Powered ELR and ALR - Production / 21211004 / (Use 2 x 135cm versions if no lift) / (use 1 x 245cm and 1 x 195cm version if lift fitted) / Used on production
Powered ELR and ALR –Spares. No ISM Drive Only / 060321 / 020063-160 x2
Powered ELR and ALR – Spares With ISM and other powered options / 015586 x2 / 020063-240
020063-190

Note – Resistor networks are contained within looms 060663 or 065096

Salsa M2 / M2 Mini / R2 / R2HD / M2HD / Jive M / Jive R2 / Zippie Salsa M2 and R2 R-Net and VR2 Build – Simplified compared to Salsa M

Drive only / 060665
Tilt Only / 21211000 / 21211005-xxx / 060393 (To link out missing Lift actuator)
Lift Only / 21211000 / 21211005-xxx / 060393 (To link out missing Tilt actuator)
Recline Only / 21211004-xxx
Lift and Tilt / 21211000 / 21211005-xxx (X2)
Tilt and Recline / 21211000 / 21211005-xxx / 060393 (To link out missing Lift actuator) / 21211004-xxx
Lift and Recline / 21211000 / 21211005-xxx / 060393 (To link out missing Tilt actuator) / 21211004-xxx
Lift, tilt and recline / 21211000 / 21211005-xxx (X2) / 21211004-xxx
Powered ELR, ALR or Centre mount Legrest / 21211004-xxx (X2)

Note – Resistor networks are contained within loom 21211000

-xxx refers to cable length. Please refer to online parts manual when considering which loom length is required. This will vary from product to product due to position of power module or seating module relative to actuator position. Note that for all chairs with lift options, the cables to connect to lift, recline and powered legrests will need to be routed via the cable track, so they will be longer cables.