OTTO HEUSS PCB RM-2 User manual

Otto Heuss GmbH
Amtsgerichtsstr. 12
35423 Lich, Germany
[phone]
[e-mail]
Software Version 1.3.2
Mounted-Hardware Version Rev.5
PlugIn-Hardware Version Rev.7
Date of issue: 04.03.2020 Page 1
User manual
for OTTO HEUSS universal stop motor PCB RM-2
For the operation of:
Stop action sliders (el.), dual stop action sliders (el./mech), couplers and
tremulants, with 14V and 24V direct voltage (DC) and alternating voltage (AC)
Order number 4056-850 Type plug-in PCB
Order number 4056-800 Type mounted PCB

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 2of 8
1INTRODUCTION:THE OTTO HEUSS UNIVERSAL STOP MOTOR PCB RM-2 .............................................................. 2
2TECHNICAL DATA ............................................................................................................................................ 2
3MECHANICAL CONNECTION .............................................................................................................................. 2
3.1 Mounted PCB..................................................................................................................................... 3
3.2 Plug-In PCB ........................................................................................................................................ 3
4ELECTRICAL CONNECTION ................................................................................................................................. 3
4.1 Mounted PCB..................................................................................................................................... 3
4.2 Plug-IN PCB........................................................................................................................................ 5
4.3 Fuse ................................................................................................................................................... 5
5SETTING THE DIP-SWITCH ................................................................................................................................. 5
6FUNCTION TYPES /OPERATING MODES OF THE PCB.............................................................................................. 6
6.1 Electrical stop action motor .............................................................................................................. 6
6.2 Dual electrical / mechanical stop action motor ................................................................................ 6
6.3 Coupler motor ................................................................................................................................... 7
6.4 Tremulant motor ............................................................................................................................... 7
7LED-INDICATORS............................................................................................................................................ 7
8ESD-WARNING .............................................................................................................................................. 8
9PRECAUTIONARY MEASURES............................................................................................................................. 8
10 WARRANTY ................................................................................................................................................... 8
11 DISPOSAL...................................................................................................................................................... 8
1Introduction: The OTTO HEUSS universal stop motor PCB RM-2
In the past, there were many different variants of motor control cards, for different purposes. Sliders
in different versions, tremulants, couplers and much more in 14V and in 24V in both DC and AC voltage.
To simplify the variants and to create new or improve existing functions, the circuits will in future only
be divided into two variants that combine all the functions of the previous cards:
-Variant 4056-800, for mounting on the current OTTO HEUSS stop motors R20 and R50. (For
mounting on the older motors R40, R60 and older series of the R50 the adapter plate 4056-
900 is required).
-Variant 4056-850, for plugging into all current and past control cabinets for stop motor plug-
in cards (not 3x42V slider motors)
2Technical data
Power supply Operating voltage DC voltage
12-28VDC
Power supply Operating voltage AC voltage
14-26,5VAC (RMS)
Maximum current consumption of the circuit
Max. 4,5A (14V Motor with 18V)
Switching threshold for inputs (setter - ON/OFF)
6VDC
GND switching (max. resistance to GND)
1kΩ
Common potential of the motor coils
GND
Switching output to setter, labeled "Kontakt”
Voltage = Operating voltage
Current = max. 100mA

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 3of 8
3Mechanical connection
3.1 Mounted PCB
The mounted circuit is usually supplied by us fully assembled and wired. The designation of
the connections can be read when the white plug is removed.
The mounted circuit is mounted on the motor by four PCB holders. The four connecting cables
of the motor are connected to the corresponding terminals MAGNET AN/COM/COM/AB.
On the PCB there are arrows next to the potentiometers marked AN (ON) and AB (OFF). These
indicate the working direction of the motor. This can also be inverted by means of dip switch
3, as described later.
3.2 Plug-In PCB
The plug-in circuit is plugged into the corresponding slot of the control cabinet.
Attention:For safe insertion and removal of the card, make sure to switch off the organ! The wiring of
the motors to the switch cabinet is described in the respective manual of the switch cabinet.
4Electrical connection
4.1 Mounted PCB
All connection terminals are designed with push-in connection technology. This allows rigid
conductors or flexible conductors with cable shoes to be inserted into the terminal without
actuating the release-button. To release the cable or to insert flexible conductors without cable
shoes, the release-button must be actuated.
For the white 4-way terminals, the release is the orange actuating surface above. On the
black/red terminals, the release is the slot-shaped recess between the two cable entries
located above each other.
The red/black connector is not removable, the designation of the terminals is printed next to
it on the board. The connection terminal is intended for cables up to 2.5mm².
The black terminal is labeled "-" and intended for the negative connection (=GND), the red
terminal is labeled "+" and intended for the positive connection. The second cable slot can be
used to build a cable bridge to the next motor.
Attention:When +/- connecting several PCB´s, please note the required fuse and the cable diameters
that depend on it!

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 4of 8
The white connectors are designed for cables up to 1.5mm².
The designation of the connections can be read when the white plugs are removed.
The four cables of the motor AN-SPULE/COM/COM/AB-SPULE are connected to the "motor"
connector at the corresponding terminals. [ON-Coil/COM/COM/OFF-Coil]
At the Setter connector, up to four cables are connected to the associated terminals for Setter
control.
The following control lines are provided:
Kontakt [Contact] Status feedback to the setter in case of an el./mechanical dual stop action. For this
purpose, a switch must be connected to the two "Schalter"[Switch] connection points,
which are located at the bottom longitudinally on the edge of the board. If the two
connections are connected to each other by closing a switch, a positive signal in
operating voltage is output at the "Kontakt" [Contact] connection.
Attention: No external voltage must be applied to this connection.
AN [ON] Connection for the signal to switch on the motor from the setter or stop switch (RS,
RzO). Input optionally positive or negative switching, adjustable with dip-switch 5.
When used as an electrical slider motor a permanent signal is required, if this signal
drops off, the magnet is switched off again. When used as el. / mechanical dual stop
action a momentary signal (pulse) is required.
AB [OFF] Connection for the signal to switch off the motor, this is only used for the
electrical/mechanical dual stop action version, otherwise no cable connection
required. Input can be set to either positive or negative switching with dip-switch 5.
As this input is only used with an electric/mechanical dual stop action, a momentary
signal (pulse) is always required here.
Funktion [Function] Connector for the signal to switch on various special functions such as
“stop freeze”. This input always need a negative signal.
Attention:No positive voltage (+1 to 28V) must be applied to this connection from an external source.
Schalter [Switch] 2-pole connection for a closing switch at the bottom longitudinal edge of the board
when used with el./mechanical dual stop action. If these two contacts are connected
to each other, a signal in operating voltage is given out at "Kontakt".
Attention: The voltage at the two connection points "Schalter"[Switch] on the side of the board is
internally less than 6V which is switched by the switch. If the switches of the dual stop action are
operated with an external voltage, they must not be connected to the PCB! In this case the switches
should be connected directly to the setter without detour via the board.
Trem.Poti.[Tremulant Potentiometer] 3-pin connector for a 10kΩ potentiometer, top longitudinal on
the edge of the board when used with a tremulant motor. This potentiometer is used
to control the speed of the tremulant. The center contact of the potentiometer
corresponds to the center contact on the board.

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 5of 8
4.2 Plug-IN PCB
The wiring of the motors to the control cabinet is described in the respective manual of the
control cabinet.
The connections "Schalter"[Switch] and "Trem. Poti." are available on the side of the board, as
well as for the surface-mounted version.
4.3 Fuse
There is a fuse on both versions of the circuit. Depending on the version, this can
be different in the factory. This is the fuse type "mini flat plug fuse".
5Setting the dip-switch
The function modes are set by means of dip switches. After changing the dip switches, the
board must be disconnected from the power supply to accept the new setting.
Folgende Einstellungen sind möglich:
Switch 1 & 2:Determining which basic function the magnet should have.
Switch 3: When this switch is ON, the input logic is inverted. With a slider motor, this is used to
turn the working direction of ON and OFF. With tremulant and coupling magnets, this
switch causes the magnet to operate when no RS/RzO signal is present and vice
versa.
Switch 4: If this switch is ON, the status of the "Kontakt"[Switch] connection is inverted. (Setter
feedback dual stop action). For this, a switch must be connected to the two
"Schalter" [Switch] connection points on the side of the board.
Switch 5: If this switch is set to ON, the inputs Setzer-AN [Setter-ON] and Setzer-AB [Setter-
OFF] operate by a negative signal (GND). Usually a plus-switched control signal from
the stop switch or setter is used, this function can be used to switch to a negative
signal. The input "Funktion" is always with negativ (GND) signal.
If this dip-switch is switched on, the LEDs of the inputs Setzer-AN and Setzer-AB light
up inverted to normal operation. The maximum resistance to ground must not
exceed 1kΩ.
Switch 6: If this switch is set to ON, an End Boost is activated. In this case, after a short period
of time, the motor is energized with 100% of the voltage for a short period of time
for the function el. stop action and el. /mech. dual stop action. This function safely
pulls heavy sliders into the end position.
With smooth-running sliders, the end position is reached before the End Boost sets
in, so that this is not associated with additional noise.
1
2
3
4
5
6
7
Description
0
0
Stop motor el. stop action (RS/RzO permanent signal)
1
0
Stop motor el./mechanical dual action (RS/RzO pulse
signal)
0
1
Tremulant (RS/RzO permanent signal)
1
1
Coupler motor (RS/RzO permanent signal)
1
Turn working direction ON/OFF-OFF/ON
1
Microswitch turn output
1
Inputs ON and OFF negative input signal
1
Stop motor End-Boost
1
Temperature shutdown

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 6of 8
Switch 7: If this switch is ON, the processor's own temperature sensors are activated. This
automatically switches the magnet off if it gets very hot. Normally this function is
not needed. In "coupler motor" mode, this function is not useful, because the
magnet will most likely become warm or hot during normal operation. To reset after
the temperature shutdown has been triggered, the circuit must be switched off and
on again.
6Function types / operating modes of the PCB
6.1 Electrical stop action motor
Usual electrical stop action. There are electric stop switches in the console and additionally
the stop motors in the organ. A permanent ON signal is sent by the setter or stop switch as
long as the stop is ON.
The potentiometer AN [ON], is used to adjust the force (0-100%) of the ON coil.
The potentiometer AB [OFF], is used to adjust the force (0-100%) of the OFF coil.
The push buttons AN [ON] and AB [OFF] on the board can be used to test the set force. To
ensure quieter operation of the motor, the respective "counter-coil" is energized for a short
moment before moving in one direction.
If the button is pressed again, in whose position the magnet is already located, this can be
noticed as a "twitch", as the "counter-coil" is energized again. This can only occur when the
button on the board is pressed and not in the regular working mode of the magnet.
When the organ is switched on, the motors automatically energize one side to match the
ACTUAL state of the sliders to the SET state of the switches.
6.2 Dual electrical / mechanical stop action motor
Combination of electric stop action together with mechanical stop action. There are no
electrical stop switches in the console, only the stop motors which are mechanically
connected to the stop action and slider. The setter sends an ON pulse to the input AN [ON] or
an OFF pulse to the input AB [OFF] to move the motor electrically.
The potentiometer AN [ON], is used to adjust the force (0-100%) of the ON coil.
The potentiometer AB [OFF], is used to adjust the force (0-100%) of the OFF coil.
The push buttons AN [ON] and AB [OFF] on the board can be used to test the set force. To
ensure quieter operation of the motor, the respective "counter-coil" is energized for a short
moment before moving in one direction.
If the button is pressed again, in whose position the magnet is already located, this can be
noticed as a "twitch", as the "counter-coil" is energized again. This can only occur when the
button on the board is pressed and not in the regular working mode of the magnet.
In dual stop action mode, the setter (not this PCB) needs a permanent signal from a switch as
feedback as soon as the register is pulled. This switch can either be fed directly to the setter
separately from the power supply, or it can run over the motor PCB. In this case the switch is
connected to the two connection points "Schalter" [Switch] on the side of the board. The
corresponding signal is given out at the "Kontakt" [Contact] output. The output voltage
corresponds to the applied supply voltage.

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Otto Heuss GmbH Page 7of 8
Attention: The voltage at the two "Schalter" [Switch] connection points on the side of the board is
less than 6V! If the switches of the dual stop action are operated with a different voltage, they must
not be connected to the plug-in card! In this case the switches should be connected directly to the
setter without detour.
6.3 Coupler motor
Permanently energizes the ON coil of the Motor to hold the mechanical coupling rack to the
ON position . A permanent ON signal is sent from the setter/switch to the input AN [ON] as
long as the coupler is switched on. When the coupler is released, the magnet slow down
automatically to minimize noise.
The potentiometer AN, is used to adjust the ON force (0-100%) of the ON coil. The holding
force (while the coupler is on) is a fixed percentage of the ON force.
Potentiometer AB [OFF] is used to set the ON-time after switching OFF the coupler in order
to minimize the noise by catching the mechanical weight against the gravity. The ON force (as
the coupler is released) is a fixed percentage of the ON force when the coupler is activated.
The buttons AN [ON] and AB [OFF] can be used to test the coupler setup. After pressing ON,
the coupler remains switched on until AB is pressed.
6.4 Tremulant motor
Tremulieren zwischen AN und AB Spule. Vom Setzer wird ein Dauerhaftes AN-Signal auf
Eingang AN gesendet, solange der Tremulant eingeschaltet ist.
Das Potentiometer AN, wird zum Einstellen der Kraft (0-100%) verwendet.
Das Potentiometer AB, wird zum Einstellen des Verhältnisses zwischen AN- und AB-Seite
verwendet.
Zum Einstellen der Frequenz muss ein drittes Potentiometer (10kΩ) an den drei
Anschlusspunkten „Trem. Poti.“ angeschlossen. Dieses kann mit einem langen geschirmten
Kabel auch bis an den Spieltisch geführt werden.
7LED-indicators
Several LED's are mounted on the board, which optically represent various functionalities.
Green = Inputs
Red = Outputs
Inscription
Color
Lit when:
AB
Red
off coil is energized
AN
Red
on coil is energized
Power
Yellow
supply voltage is connected
Proz
Blue
Processor works
Fu
Green
Input „Funktion“ is not
connected to GND
AB
Green
Off-Input voltage applied
AN
Green
On-Input voltage applied
Ko
Red
Contact-Output voltage out
If dip switch 5 is switched on, the LEDs of the inputs Setzer-AN [setter-on] and Setzer-AB
[setter-off] light up inverted to normal operation. (Similar to input "Funktion" [Function])

User manual for OTTO HEUSS universal stop motor PCB RM-2
Otto Heuss GmbH Page 8of 8
8ESD-warning
Please do not touch the electronic modules without sufficient ESD protection. Like
almost all electronic components, the modules are sensitive to ESD. For this reason they
are delivered in an antistatic packaging. To protect the module from damage, the usual
ESD regulations must be observed.
Electrostatic discharge (ESD) is a spark or breakdown caused by a large potential difference, which
causes a short, high electrical voltage pulse on an electrical device. Under unfavourable conditions,
this voltage pulse can damage electrical components in the device. The cause of the potential
difference is usually a charge due to frictional electricity (triboelectric effect) or influence. Frictional
electricity also occurs, for example, when walking over a carpet, whereby a person can be charged to
approx. 30.000 V (from Wikipedia, the free encyclopaedia).
9Precautionary measures
To ensure safe operation, the following precautions must be observed:
•Avoid placing the unit near heat sources and/or in humid and/or dusty places.
•To avoid damage, the unit must be securely and stably fastened due to high workloads.
•An organ is an electrical installation and must be wired, connected and commissioned
professionally and in accordance with applicable standards and regulations.
•Avoid strong vibrations during transport, as these can damage the electronics.
•The device should not be placed near installations that emit high-frequency waves, such as
television sets, radio receivers, microphone systems, transmitter masts, etc.
•Strict care must be taken to ensure that no liquids or metal shavings
reach the device, as these can cause damage.
•Do not carry out any unauthorized work on the electronic system.
•In the event of a defect, contact the manufacturer.
•Never reach between magnet and attachment. There is a high workload.
Danger of crushing!
10 Warranty
•The company Otto Heuss GmbH provides a two-year warranty from the date of delivery.
•Otto Heuss GmbH is not responsible for damage caused by incorrect handling.
•The company Otto Heuss GmbH assumes no responsibility for cancelled or impaired concerts,
events or performances.
11 Disposal
Electrical appliances that are no longer required or are defective should not be
disposed of in the household waste; they must be taken to a local collection point for
proper disposal.
Used batteries and electrical appliances must be disposed of separately in
accordance with applicable regulations.