BENSHAW RSi S4 Series, User Manual

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MOUNTING CONSIDERATIONS
3 - INSTALLATION
3.4 Considerations for Mounting in Host Enclosures
When RSi S4 drives are mounted in a host enclosure the heat dissipated by the drives must be dissipated by
the host enclosure. If this is not accomplished, the control circuitry of the RSi S4 drives will be damaged.
Two techniques are available for mounting RSi S4 drives in a host enclosure:
The drives may be entirely enclosed in the host enclosure; or
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The drives may be mounted with their cooling fins outside of the host enclosure.
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For frames 1 and 2 consult factory for S4’s chassis for outside fin mounting.
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The following two sections discuss these two mounting techniques in greater detail.
3.4.1 Models Entirely Enclosed in the Host Enclosure
When an RSi S4 drive is entirely enclosed in a host enclosure, the host enclosure must be properly sized to
dissipate the heat generated by the drive and any other power-dissipating devices also mounted in the host
enclosure. Tables 8, 9, and 10 on pages 26 to 28 provide the heat dissipated by the various models of RSi
S4 drives. Use this information to adequately size the host enclosure.
3.4.2 Models with Fins External to the Host Enclosure
By mounting an RSI S4 drive so that its heat sink fins are outside of the host enclosure, you may select a
smaller host enclosure than that required when the drive is mounted entirely inside the host enclosure. For
most applications with this type of mounting, typically you will not need such additional cooling devices
as fans, heat exchangers, or air conditioners. Tables 8, 9, and 10 on pages 26 to 28 also provide the heat
dissipated by the various models of RSi S4 drives when the fins are external to the drive.
3.4.3 Minimum Torque Values to Secure Cover
If you remove the cover of an RSi S4 drive, it is imperative that the cover be re-secured with an air tight
seal. The Table below specifies the torque values for the bolts that secure the covers on the various RSi S4
models.
3.5 Conduit Usage
The S4 drive in the NEMA 4X enclosure is rated for 1000 psi washdown from 6 inches. To keep this
rating, the use of a sealed conduit is required. The use of a Romex-type conduit will not prevent water
entry into the enclosure. If the approved conduit is not used, all warranty claims against water damage will
be void.
RSi S4 Enclosure Type
Torque Value
English Metric
NEMA 4X
1-10HP, 230VAC input 18 in-lbs 2.03Nm
15-30HP, 230VAC input 12 in-lbs 1.35Nm
1-20HP, 460 and 600VAC input 18 in-lbs 2.03Nm
25-200HP, 460 and 600VAC input 12 in-lbs 1.35Nm
RSi S4 Model Torque Values