Ewellix CAMT20, Инструкция по установке, эксплуатации и обслуживанию

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4.0 Structure a n d fun ctio n
4.5 Requirements for
third party control units
(mandatory in medical
applications)
Control units not approved by Ewellix for CAMT linear actua-
tor, are treated as third party control units.
NOTE
It is strongly recommended to use original Ewellix controls for
the operation of the CAMT linear actuator. If third party controls
are used, there must be good documented evidence that the
requirements listed below are complied with.
The secondary circuit of third party control units must be
designed as an overvoltage category 1 circuit. The third
party control unit must be fitted with an overload safety cur-
rent cut-off. The nominal current consumption is 10A.
However, at cold start conditions the current consumption
could go up to 12.5A for a few seconds. Therefor the recom-
mended value for the current cut-off is 13.7A. The maximum
delay time for the shut off must not exceed 50ms.
The third party control must enable the linear actuator to
draw currents up to 25 A for 200 ms after switching on
(start-up current). The excess power shut off feature can also
be temporarily deactivated for this purpose. The operating
voltage of the CAMT linear actuator is 24 V DC. The no-load
voltage of 36 V DC must not be exceeded. After the system
has been installed, ensure electromagnetic compatibility.
The operating time and duty cycle of the CAMT linear actua-
tor may not be exceeded (refer to chapter ⮑ 11.1 Technical
data, page 41).
NOTE
The thirt party power supply must have an isolation between
the primary and secondary circuits according to 2 MOPP, and
provide a non-grounded secondary circuit.
Push-to-run operation (recommended): The linear actuator
operates as long as the switch is pressed. The device does
not have signals to indicate operation, and depending on the
application, it is recommended to have an operational signal
installed in the third party control unit.
For the 2-Hall encoder impulse transmitter, the third party
control unit must fulfill the following additional requirements:
• Feed the hall sensors with a voltage of 5 V DC ±10% and a
current limit of no more than 20 mA.
• Load the hall sensor outlets with a maximum of 20 mA.
• Connect the hall sensor outlets to the supply with pull-up
resistors so that the signal of the open collector outlets
can be analyzed.
For detailed connection details please see chapter 4.6
Connections (⮑ page 23).
4.6 Connections
Electrical connection
The linear actuator is connected to the control unit via a mo-
tor cable. The motor cable has a 6-pole Molex Mini-fit Jr.
connector on one end and a DIN-8 connector or flying leads
on the other end.
Connected load is 24 V DC and up to 10 A according to the
technical data (refer to chapter 11.1 Technical
data, page 41).
Important
• Ensure that cables cannot get pinched or damaged
• Check that the supply voltage corresponds to the nominal
values on the type plate.
Molex Mini-fit Jr. 6-pole connector
DIN-8 connector
Flying leads