micromotor Swissdrive 400 User manual

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User Manual Swissdrive 400
Version with Removable Brushes (P./N. 035.4039)
Content
1. Description and Intended Purpose
2. Performance Data
3. Safety Instructions
4. Installation and Initial Operation
5. Trouble-Shooting
6. Service and Repair
7. Spare and Wear Parts
1. Description and Intended Purpose
The motor Swissdrive 400 (type RNH 175/20) is a permanent-excited DC motor with brushes. It
contents a planetary gear with the ratio 1:8.8, a Vulkollan coated drive wheel, an internal thermo
switch and an electrically released brake. The brake has been designed as a parking brake, its use as
a main brake is limited. Emergency stops with high load and / or at high speed cause increased wear
of the brake components. Therefore after 5’000 emergency stops shall be provided maintenance of
the brake. In case of increased requirements to running smoothness or positioning accuracy there
can be installed an encoder, type EM1 or HEDS 9100 or similar, with hub wheel hole diameter 4mm.
The brushes can be removed from outside of the motor (see point 6). On request the drive wheel can
be delivered with different coatings or diameters on request.
The Swissdrive 400 motor was designed as a vehicular drive with a maximum wheel load of 500kg for
use in enclosed rooms, e.g. for an industrial truck.
2. Performance Data
Voltage: 24VDC
Power: 350W
Current Consumption: 32A
Ins. Class: F
Class of Protection: IP 43
Gear Ratio: 1:8.8
Speed Rating: 120/min
Brake Torque: 45Nm (at drive wheel)
Permitted Wheel Load: 500kg
Fig. 1: Swissdrive 400

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3. Safety Instructions
In this user manual there will be used safety instructions with the following icons:
Danger!
Warning about risk of injury or accident.
Attention!
Warning about risk of technical damage.
Note!
Operating instructions.
Note!
Read first the user manual before operating.
4. Installation and Initial Operation
Danger! Attention!
The electrical installation may only be carried by properly trained personnel and in
compliance with the legal provisions.
Danger!
Before installing make sure that the system is off power.
Attention!
During assembling don’t use force. Secure the screws for fixing of attachments with
„mediumfirm“ threadlocking, e.g. Loctite 243 or Ergo 4052.
Note!
Before initial operation read first the user manual of the vehicle control unit and the
motor control unit.
Mount the motor in accordance with shown illustration (fig. 2) with 5 screws M10 to the motor carrier /
to the chassis.

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Fig. 2: Mounting Dimensions
The cable outlet is placed at the side facing away from the wheel.
Fig. 3: Connecting cables
The motor may only be connected to a supply voltage of 24VDC. The motor cables shall be rated for
a nominal current of 32A and be installed shielded from damage.
For to set the motor in rotation the control unit first has to unlock the brake. Otherwise, for to stop the
vehicle the control unit has to stop the motor before the brake will be locked. This way there will be
avoided damage and premature wear of the brake parts.

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The wire arrangement is shown in the following tables:
Power Supply
Brake
red
+24VDC
4.0mm2
white
+24VDC
0.25mm2
blue
ground
4.0mm2
brown
ground
0.25mm2
Encoder
Thermo Switch
orange
Vcc
0.14mm2
green
T1
0.25mm2
green
channel A
0.14mm2
yellow
T2
0.25mm2
yellow
channel B
0.14mm2
blue
ground
0.14mm2
The direction of rotation can be inverted at the vehicle or motor control unit. Alternative to this
the direction of rotation can be inverted changing the red and blue power supply wire of the
motor.
In case of increased requirements to running smoothness or positioning accuracy there can
be installed an encoder. The motor has been prepared for the installation of an encoder.
Instead of the mentioned encoder can be used another type matching to the mounting
dimensions.
Fig. 4: Installation of the Encoder

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Untighten the cross head screws of the cover with a cross head screwdriver size 1 and
remove the cover. Place the hub wheel (hole diameter 4mm) at the motor shaft end.
Untighten the cylinder screws with a slotted screw driver size 1, place the encoder instead of
the plastic sleeves (throw the plastic sleeves away) together with the distance sleeves at the
motor and fix it with the cylinder screws. Position the disc of the hub wheel into the middle of
the slot in the encoder housing and fix the wheel with the setscrew. Solder the wires of the
ribbon cable onto the encoder contact in accordance with fig. 5. Insulate the soldered joints
with shrinking hose. For this place the shrinking hose pieces onto the ribbon cable wires
before soldering.
Attention!
Heat –as far as possible –the shrinking hose only. Avoid temperatures higher than 110°C
at the ribbon cable.
Fig. 5: Wire Arrangement of the Encoder
5. Trouble-Shooting
In any case of trouble which can’t be solved using the recommendations in this user manual, please,
contact directly the manufacturer of the motor:
6. Service and Repair
For maintenance purposes have been provided the changes of the wheel, the brushes, the cover and
the encoder. For other maintenance, services or repair, please, send the motor to the manufacturer
Micro-Motor AG.
6.1. Change of Drive Wheel
Untighten the wheel screws with a torx screwdriver X45. In case of need heat the screws, e.g. with a
soldering lamp up to 80-95°C, for to melt the threadlocking. Remove the old wheel and clean the
contact surfaces and threaded holes. Place the new wheel while aligning the screw holes. Tighten the
screws with torque 17Nm. If you don’t use new PRECOTE-coated screws secure the screws with
“mediumfirm” threadlocking (e.g. Loctite 243, Ergo 4052).

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Fig. 6: Assembling of Drive Wheel
6.2. Change of Brushes
In case of need remove the drive wheel or the whole motor for a better accessibility of the brushes.
First remove all six brushes: Untighten the tubular covers with a slotted screwdriver size 4 and
remove the old brushes.
Clean the inner space of the motor from worn dust blowing it out with compressed air.
Danger!
Beware your eyes and respiratory tracts of dust and compressed air.
After this assemble the new brushes: Snap on the tubular cover onto the screwdriver (a new cover fits
to a size 4 screwdriver). Insert the new brushes with correct orientation into the tubular and hold them
down with a suitable utility. Tighten the tubular cover.
Fig. 7: Assembling of Brushes

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7. Spare and Wear Parts
Part
P./N.
S./P.
W./P.
Notice
Motor complete
035.4039
X
Drive wheel
600.1874
X
X
Counter sunk screw M8x20 Torx (6 St)
100.4380
X
for drive wheel
Set: brushes with tubular cover
913.1755
X
X
1 set for motor
Cover
600.1886
X
Counter sunk screw M3x30 cross recess (2 St)
103.1036
X
for cover
Sticker “Swissdrive”
899.1495
X
for cover
Hub wheel 100 CPR
940.1021
X
for encoder
Encoder housing
940.1022
X
for encoder
Set: (cyl.-screws, distance sleeves, shrinking hose)
913.1754
X
for encoder
S./P. –spare part, W./P. –wear part