User Manual

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Building Technologies CC1N7814en
02.02.2018
Installation notes
∂ Ensure that the electrical wiring is in compliance with national and local regulations.
∂ Make certain that strain relief of the connected cables is in compliance with the
relevant standards (e.g. as per DIN EN 60730 and DIN EN 60335)
∂ Ensure that spliced wires cannot come into contact with neighboring terminals. Use
suitable ferrules
∂ In case of increased vibration requirements, the internal connector system must be
additionally secured
∂ The connection between the actuator drive shaft and the relevant controlling
element must be form-fitted
∂ The holding torque is reduced when the actuator’s power supply is switched off
Warning!
The housing cover may only be removed for short periods of time for wiring or
when making the addressing. It must be made certain that dust or dirt will not
get inside the actuator while such work is carried out.
Warning!
The actuator contains a printed circuit board with ESD-sensitive components.
The top side of the board carries a cover which affords protection against direct
contact. This protective cover must not be removed! The underside side of the
board must not be touched.
Addressing (assignment of functions) defines whether the SQM4... shall operate as a
∂ fuel actuator
∂ air damper actuator, or
∂ auxiliary actuator,
and is made with the display and operating unit AZL5... and the addressing button on
the actuator, which is located under the housing cover (refer to Basic Documentation
P7550).
The correct assignment of actuator functions can be checked with the help of flashing
LEDs.
For the maximum permissible cable length, refer to the Basic Documentation.
Cabling must be strictly serial (no branching permitted!).
Electrical connection
The supplied RAST3.5 connector must be used with screw terminals for electrical
connections. A tightening torque of 0.25 Nm must be observed for fitting the screw.
Housing cover
ESD
Addressing
Cable length
Topology