GarrettCom DS50 - Manual (Page 39)

Magnum DS50 / DS60s Dual Speed Hubs Installation and User Guide (06/02)
B4.0 INSTALLATION
-36 to -70VDC
_
+ GND
This section describes the
installation of the 24VDC or -48VDC
power source leads to the 24VDC or -
48VDC power terminal block on the
Magnum DS50 / DS60. (see figure
right).
Figure B4.1: Optional Terminal Block on Magnum DS50 / DS60 with -48VDC power
In this picture, the 24VDC or -48VDC terminal block on the Magnum DS50 / DS60
is located on the rear of the unit and is equipped with three (3) screw-down lead posts. The
leads are identified as negative (-), positive (+), and chassis ground (GND).
The actual connection procedure is very straightforward. Simply connect the leads to
the Magnum unit, beginning with ground. Ensure that each lead is securely tightened.
Note: The GND should be hooked up first. The DS50/60 unit has a floating
ground, so the user may elect to Ground either + or = terminal to suit the customer’s use.
Before connecting hot lines to the Terminal Block of –48VDC or 24VDC, 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 “+”.
An optional ON-OFF manual switch, available on some Magnum units, is not
included on the Magnum DS50 / DS60 Dual-speed Hubs Plus.
B4.1 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.
B5.0 OPERATION
Operation of the Magnum DS50 / DS60 with the optional 24VDC or -48VDC power
supply is identical to that of the standard AC-powered models.
B6.0 ORDERING INFORMATION
To order the optional -48VDC power supply factory installed, add a suffix of “--
48VDC” after the product’s standard model #. Example: Magnum DS50-48VDC.
Similarly, to order the optional 24VDC industrial specific power supply factory
installed, add a suffix of “ 24VDC” after the product ‘s standard model #.
Example: Magnum DS60- 24VDC.
B7.0 TROUBLESHOOTING
Please refer to Section 6.0 for troubleshooting
35
www GarrettCom com . .