Automationdirect.com Stellar SR44, User Manual

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1–3
1 – Mechanical Installation
1.1 – Mounting
Mount the unit to a flat, vertical surface using the mounting holes (or slots) on its base-plate. The
mechanical outline diagrams, shown in the “Mechanical Outline” section (1.9), give the
dimensions and mounting hole positions for each model. Ensure that:
• The orientation of the unit has the “TOP” uppermost .
• The location allows adequate front access.
• You can view the alphanumeric display.
1.2 – Requirements for an Enclosure
For a typical industrial environment, an enclosure should provide the following:
• A single location for the unit and its protection/isolation switch-gear.
• The safe termination of cabling and/or bus-bars.
• Means to effect proper air flow through the enclosure.
1.3 – Ventilation
The installer must ensure that the enclosure can maintain the operating temperature below 40 ºC
(104 ºF), or with derating 60 ºC (140 ºF). To ensure that the unit operates within a suitable
temperature range, periodically measure the internal temperature of the enclosure. If you situate
the unit above equipment that generates a significant amount of heat, reduce the unit full load
rating.
1.4 – Storage and Derating
Above 40 ºC (104ºF), derate linearly by 2% of unit FLC / ºC to maximum of 40% at 60 ºC (140ºF).
1.5 – Altitude
Humidity
Max. 85% non-condensing, not exceeding 50% at 40 °C [104 °F]
Temperature Minimum Maximum
Storage, continuous
-25 ºC [-13 ºF] +60 ºC [140 ºF]
Storage, not exceeding 24 hours -25 ºC [-13 ºF] +75 ºC [167 ºF]
Operating (without derating) *
0 ºC [32 ºF] +40 ºC [104 ºF]
Operating (with maximum derating) *
0 ºC [32 ºF] +60 ºC [140 ºF]
* Above 40 ºC (104ºF), derate linearly by 2% of unit FLC / ºC to maximum of 40% at 60 ºC
(140ºF). [Unit FLC = Soft Starter rated Full Load Current; NOT motor Full Load Current.]
Condition Maximum Height Above Sea Level
Operating (without derating) 1000m [3281 ft]
Operating (with maximum derating)
2000m [6562 ft]
Derating: Above 1000m (3281 ft), derate linearly by 1% Unit FLC per 100m
to a maximum of 2000m (6562 ft).
Chapter 1: Mechanical Installation
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019