Kendrion HS7722 User manual

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 1 of 6
Instruction Manual
Motor Lock HS7722
M853 DE / 26.11.2018
Kendrion Kuhnke Automation GmbH
Industrial Actuators and Controls
Lütjenburger Straße 101
23714 Malente, Deutschland
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
Website: https://www.kendrion.com

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 2 of 6
Contents
1What is a motor lock? ....................................................................................................................... 2
2Design, dimensions, installation........................................................................................................ 3
3Electrical connection ......................................................................................................................... 4
3.1 Pin wiring ...................................................................................................................................4
3.2 Motor actuation .......................................................................................................................... 4
4Functional process............................................................................................................................ 5
4.1 Home position (sensor #1)......................................................................................................... 5
4.2 Door is latched (sensor #2, sensor #1 remains active)............................................................... 5
4.3 Door moves into the seal (sensor #3) ........................................................................................ 5
4.4 Move to venting position (sensor #5) ......................................................................................... 6
4.5 Unlock door (sensor #6)............................................................................................................. 6
4.6 Return to home position (sensor #1) .......................................................................................... 6
5Technical data .................................................................................................................................. 6
1 What is a motor lock?
Since automation is entering more and more areas of our lives, new locking and interlocking systems are
needed. The new motor lock combines a mechanical interlock, motor drive unit, limit sensors and
electronic circuitry.
One of the many tasks of a motor lock is to not only lock a machine door but to apply a monitored and
controlled force to gently pull it into the door seal. Benefits of this locking device include an automatic
readjustment of the door when the seal has worn down.
When opening a door, the motor lock's up to 40 mm of travel distance provide further positioning options,
e.g. to let superheated steam escape from furnaces.
Safety aspects to be considered by users
Improper operation at initial use, protection of operators when the door closes automatically, protection
of door mechanism against damage, protective EMC measures, fuses to protect cables against
overload.
Properties
up to 40 mm travel distance
uses controlled force for closing
up to 400 N closing force
multiple target positions
emergency unlock supported

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 3 of 6
Design, dimensions, installation
The figure below shows a motor lock as delivered. It is at its home position for receiving a door. Sensor 1
is covered.
Three mounting holes are provided on either side. Another mounting option is to use two screws on the
front and one screw on the side face.

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 4 of 6
2 Electrical connection
All electric signals are transferred trough the male 15-pin D-sub-miniature connector on top of the motor
lock.
Note: You will need a mating connector (female 15-pin D-sub-miniature connector) and the appropriate
cable to connect the lock to your higher-level control unit. None of the two elements are included in the
package. We recommend using a shielded D-sub cable.
2.1 Pin wiring
Bridge pins Motor+ and Motor- in order to distribute the load generated by the motor and to be carried by
the connectors among three plugs each (pins 6, 12, 14 and pins 11, 13, 15).
Note: The sensor functions inside the motor lock are provided by light
barriers.
2.2 Motor actuation
The polarity defines the direction in which the motor turns:
Forward (open) +24 V on pins 6, 12, 14 / 0 V on pins 11, 13, 15
Backward (close): 0 V on pins 6, 12, 14 / + 24 V on pins 11, 13, 15
Short-circuit the connectors after stop!
Turn off the motor voltage at the target position (sensor x). Ensure that the motor connectors
short
-circuit immediately afterwards. This means immediately stops the drive and prevents the
motor from moving across the sensor.
Never go across the motor end positions!
The motor must turn off at one of the end positions. Otherwise (if the lock goes across the end
positions), you run a risk of mechanical damage because the motor lock has no mechanical limit
stops.
Pin
Connects to
Bridges in
mating
connector
1
Sensor #5
2
Sensor #4
3
Sensor #3
4
Sensor #2
5
Sensor #1
6
Motor +
7
Gnd
8
24 V DC in
9
Gnd
10
Sensor #6
11
Motor -
12
Motor +
13
Motor -
14
Motor +
15
Motor -

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 5 of 6
3 Functional process
3.1 Home position (sensor #1)
Door Seal Door Loop Connector Motor
The door is open and can be closed
without operators having to exert much
force.
3.2 Door is latched (sensor #2, sensor #1 remains active)
The door latches onto the door loop but
need not be closed completely. The door
locks preliminarily and prevents the door
from opening.
A command of the machine control unit
could still unlock the door. To do so, run
the motor forward (3.2 Motor actuation)
to sensor #6. Then go to section 4.6.
3.3 Door moves into the seal (sensor #3)
Output "close door" command.
The motor drives the door backward into
the seal (400 N) up to sensor #3.
A spring actuator compensates for any
wear on the door seal (retaining a constant
sealing pressure).
Seal or door loop defective (sensor #4)
When you close the door and the motor fails to stop at sensor #3 but runs on to sensor #4, there
is a defect either in the seal (e.g. wear) or in the door loop.
If so, the drive must stop, and the fault has to be removed immediately.

Instruction Manual Motor Lock HS7722 03.05.2021 // Page 6 of 6
3.4 Move to venting position (sensor #5)
The process (e.g. baking) is finished.
The motor drive runs forward to open the
door to an about 30 mm gap at sensor #5.
The heat can escape, and the baking
process terminates. To prevent operators
from being burnt, the door may stay locked
for a customisable time.
3.5 Unlock door (sensor #6)
After the set time, the latch is moved
forward by the motor running up to sensor
#6 and unlocking the door.
You can now open the door by hand to
remove the finished products.
3.6 Return to home position (sensor #1)
To return the lock to its home position, the
motor drive now needs to move backward
to sensor #1.
4 Technical data
Model
Motor Lock HS7722
Travel distance
40 mm
Velocity
6.5 mm/s
Position sensors
6 x light barrier (open collector, 30 mA)
Maximum closing force
400 N
Power supply
24 V DC
Power
19 W (@ 24 VDC)
Operating temperature
0 °C … 80 °C
Housing
Plastics
Dimensions (W x L x D)
117 x 227 x 30 [mm]