GarrettCom Magnum Quad-Series Installation And User Manual page 52

Magnum Quad-Series Fiber Switches
The 24, 100 and 125VDC options are particularly useful i
where it is common for facilities to op
125VDC options are mainly used in power
electrical generating plants, etc. The 24VDC applications ar
environment, such as factory floor, H
B4.0 INSTALLATION
This section describes the
installation of the -48VDC, 24, 100 and
12 5VDC power source leads to the DC
p ower terminal block on the Magnum
Quad-Series Switches. (see figure at the
right with –48VDC power as example).
Figure B4.1: -48VDC Terminal Block on
In this picture, the -48VDC terminal block on the Magnum Quad-Series Switch
is located on the rear of the unit and is equipped with three (3) screw-down lead posts. It
is similar for 24, 100 and 125VDC options on the Quad-Series Switch. The leads are
identified as negative (-), positive (+), and chassis ground (GND).
The actual connection procedure is v
leads to the Magnum unit, beginning with grou
tightened.
Note: The GND should be hooked up first.
ground, so the user may elect to Ground eith
use.
Before connecting hot lines to the Terminal Block of –48VDC, 24,
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 the DC supply must be connected to the post labeled "+".
An ON-OFF manual switch is optional for DC power. This can be used to cut
off power connections, and as a RESET for the switch.
B4.1 UL Requirements
1. Minimum 14 AWG cable for connection to a Centralized DC power sourc
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 Quad-Series Switch with the optional -48VDC, 24V,
100 and 125VDC power supply is identical to that of the AC-powered models.
www GarrettCom com . .
Installation and User Guide (06/03)
erate on 24VDC or 1
utilities, such as electrical substations,
VAC equipment, m ilitary equipment, etc.
Magnum Quad-Series Switches -48VDC
ery straightforward. Simply connect the
nd. Ensure that each lead is securely
The Quad-Series Switch unit has a floating
er + or = terminal to suit the customer's
46
n the Industrial environment,
25VDC power. The 100 and
e mainly in the Industrial
_
+
GND
ON
OFF
36-70VDC
100 or
e.