Magnum 6KL Managed Edge Switch Installation and User Guide
11/09
47
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Fig. B4.0a Connections for 125 and 250VDC power input
NOTE: Always use a voltmeter to measure the voltage of the incoming power supply
and figure out the +ve potential lead or -ve potential lead. The more +ve potential lead
will connect to the post labeled “+ve” and the rest to the “-ve”. The GND can be
hooked up at the last.
When power is applied, the green PWR LED will illuminate.
Note: The GND should be hooked up first. The 6KL unit has a floating ground, so the
user may elect to Ground either + or - terminal to suit the customer’s use.
Before connecting live power lines to the Terminal Block of –48VDC,
12VDC, 24VDC, 125VD or 250VDC products, 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 “+”.
B4.1
UL Requirements for DC-powered units
CAUTION: 48VDC products shall be installed with a readily accessible
disconnect device in the building installation supply circuit to the product.
Minimum 18AWG cable for connection to a Centralized DC power source.
1.
Minimum 14AWG cable for connection to an earth wiring.
2.
Use only with Listed 10A circuit breaker provided in building installation.
3.
“Complies with FDA radiation performance standards, 21 CFR subchapter J.”
or equivalent.
4.
Fastening torque of the lugs on the terminal block: 9 inch-pound max.
5.
To secure a centralized DC Power Source cable , 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 Magnum 6KL Switches with the optional -48VDC, 12VDC,
24VDC, 125VDC or 250VDC dual-source power input is identical to that of the standard
single-source DC-powered models.
B6.0 TROUBLESHOOTING
Please refer to Section 6.0 for troubleshooting
BRO
WN
or B
LAC
K (+
)
BLUE or WHITE (-)
GRN/Y
LW or G
REEN
(GND
)
(+)
(-)
(GND)
