GarrettCom 6K25 User Manual
Page 67
Magnum 6K25 Managed Fiber Switch Installation and User Guide (04/06)
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user may elect to Ground either + or = terminal to suit the customer’s use.
Before connecting hot lines to the 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 Switch chassis. Ensure that each lead is securely
tightened.
The 24VDC & 125VDC terminal block on Magnum 6K25’s is similar to that
described in the –48VDC information above.
C5.1 UL Requirements
The following must be adhered to in order to conform to UL requirements:
1. Minimum 18 AWG cable for connection to a Centralized DC power source.
2. Minimum 14 AWG cable for connection to earthing wiring.
3. Use only with Listed 10 A circuit breaker provided in building installation.
4. “Complies with FDA radiation performance standards, 21 CFR subchapter J.”
or equivalent.
5. Fastening torque of the lugs on the terminal block: 9 inch pound max.
6. 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 6K25R-48VDC
Dual-Src-48V for the regular DS model with no ON-OFF switch
or Dual-Src48V-SWITCH with the ON-OFF manual switch.
Similarly, order the “Dual –source 24VDC” or “Dual-source 125VDC” as a
separate line item following the product model.
Example:
Magnum 6K25R-24VDC or Magnum 6K25R-125VDC
Dual-Src24V
for regular models with no ON-OFF switch
Or Dual-Src125V-Switch for models with the ON-OFF switch
C7.0
OPERATION
Operation of the Dual-Source Magnum 6Ks-48VDC, 24VDC and 125VDC
Switch models are identical to that of the standard models.