GarrettCom 4K16 - Manual (Page 38)

Magnum 4K16 Switches Installation and User Guide (12/05)
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Before connecting to Terminal block of–48VDC, 24VDC or 125VDC, always
use a digital voltmeter to measure the output voltage of the power supply and
determine the lead which is more “+ve potential”. The more “+ve” voltage lead from
48V or –48V supply must be connected to the post labeled “+”.
The connection procedure is straightforward. Simply connect the DC leads to
the Switch’s power terminals, positive (+) and negative (-) screws. The use of Ground
(GND) is optional; it connects to the chassis. Ensure that each lead is securely tightened.
The 24VDC & 125VDC terminal block on Magnum 4K-Series Switch also has
everything similar to –48VDC info. Described above.
C5.1 UL Requirements
The following must be adhered to in order to conform to UL requirements:
1. Minimum 14 AWG cable for connection to a Centralized DC power source.
2. Fastening torque of the lugs on the terminal block: 9 inch pound max.
3. Centralized DC Power Source cable securement, use at least four cable ties to
secure the cable to the rack at least 4 inches apart with the first one located
within 6 inches of the terminal block.
C6.0 ORDERING
INFORMATION
To order the optional Dual-Source -48VDC power supply factory installed,
order “Dual-Src48V” as a separate line item following the product model.
Example: Magnum 4K16-48VDC
Dual-Src-48V for regular model with no ON-OFF switch
Or Dual-Src48V-SWITCH for model with ON-OFF switch
Similarly, order “Dual-Src24V” or “Dual-Src125V” as a separate line item
following the product model.
Example: Magnum 4K16-24VDC or Magnum 4K16-125VDC
Dual-Src24V for regular model with no ON-OFF switch
Dual-Src24V-SWITCH for model with ON-OFF switch
C7.0
OPERATION
Operation of the Dual-Source Magnum 4K-Series-48VDC, 24VDC &
125VDC Switch models are identical to that of the standard models.