Page 1
1042 Dual Power Supply
Configuration Guide
Front Panel
45-00122
2.0
1042 POWER SUPPLY
1
2 43 6 7
Front Panel Description
P/S A
ALARM
CUTOFF
ACO
ALARM
P/S B
5
TRANSPORT
Index Function
1 Mounting Bracket: Rack mounting ears are available for installation into standard 19- and 23-inch racks.
2 Panel Screw: These two screws are used to mount the front panel to the 1042 housing.
3 Power Indicator: This green indicator ligh ts whe n the 1042 power shelf has 110 VAC applied to it and operation is normal.
4 Power Supply: Power supplies PS A and PS B are inserted into these two opening.
5 ACO: This yellow LED lights if the Alarm Cutof f switch is placed in the upper ON position, ind ic ating that the alarm relay contac ts
are disabled.
6 Alarm: This red LED lights if any fuse opens or if one of the two power supplies fails (this is cleared by removing the supply).
7 Alarm Cutoff: This switch controls the alarm relay con tacts. If it is placed in the upper ON position, the alarm relay circuitry i s
deactivated.
Installation
The Verilink 1042 Dual Power Supply Shel f is designed to hold either one or two power supplies conforming to industry-standard Type-400 mechanics
(such as the Verilink model number 9 -1000 -4 8V-
2). The shelf provides wiring from the power supply
connectors to an AC power input. Fused DC output
terminals are located on the rear of the shelf.
Rack mounting brackets are available for installation
into standard 19 - and 23 -inc h racks. To install the
brackets onto the 104 2, use the two tapped screw
holes on each side of the 104 2. To install the 1042
into a rack, in sert two screws through b oth the left
and right mounting brackets.
The 1042 shelf has two slots accessible from the
front in which the power supplies are inserted. To install the power supplies, first remove t he front panel
by removing the two screws. Then insert each supply
through one of the t wo slots until t he card is firmly
seated to the rear con nector.
AC power is applied to the unit by inserting the power cord into a 110 V outlet. DC power is the n obtained from the unit by c onnec tion to the r ear-panel
terminal strips.
WARNING: Use caution when installing or
removing the power supplies. 110 volts AC is
present on the inside rear circuitry.
When installing a power supply with A C po wer connected, the A LARM LED ligh ts for about ten s econds while the unit stabilizes (undergoes a soft start).
The green power indicator then lights if the unit is
operating normally.
WARNING: When replacing one of the
power supplies while in service, wait at least
10 minutes after rem oving the supply before
replacing the new one. This prevents contact
arcing of the edge connector.
Specifications
Input Voltage: 115 VAC (±20 V)
Output Voltage: 48 VDC (±2 V)
Output Current: 2 A maximum, 50 mA minimum
per power supply
Power Input: 113 W maximum
Heat Generation: 390 BTU
Efficiency: 80 %
Alarm Contact
Ratings: 1.0 A at 220 VDC
1.0 A at 250 VAC
Mechanical: 16.5″ W, 1.625″ H, 6″ D
4.5 lbs without power supplies
7 lbs with power supplies
Ordering Numbers
F-1042-000--110:The part number of the 1042 shelf
(dual 400 plug-in shelf) without any power supplies
9-1000-48V-2: The part number for the 48 VDC
power supply
Industry Listings
FCC Compliance: Part 15 Class A
Subpart B
U.S. Safety: UL 1459
Canadian Safety: CSA C22.2 No. 225-M90
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1042 Power Shelf Rear Panel
FUSE RATING
115 VAC
2.0A
60Hz
3.0A 125V
B
F1
+
PSB
48VDC
2A
ALARM
CONTACTS
NOCNC
ELECTRIC SHOCK AND ENERGY HAZARDS, TO
COMPLETELY DEENERGIZE REQUIRES THE
DISCONNECTION OF THE AC AND DC SOURCE
REPLACE WITH SAME TYPE/RATING FUSE
2 31 4 5
Rear Panel Description
Index Function
1 AC Power Cord: This cord can be connected to any available 110-V outlet.
2 Fuse F1: This fuse protects power supply B (PS B) with a rating of 3 amperes.
3 PS B: The three screw terminals on th e l eft are used to connect a −48-VDC load to the main feeds.
Alarm Contacts: The three isolated contacts on the right permit connection to a remote indicating device. The contacts may be
4
5 Fuse F2: This fuse protects power supply A (PS A) with a rating of 3 amperes.
6 PS A: Th ese t hree screw terminals are used to connect a −48-VDC load to the main feeds.
configured as normally closed (NC) or normally open (NO). NO and NC refer to the contact’s relationship to the common (C) contact
under a no alarms condition.
+
PSA
48VDC
2A
FUSE RATING
3.0A 125V
A
F2
6
Simplified Schematic
PS A
•
-48 V
F2
3 A
•
PS B
-48 V
F1
3 A
ALARM CONTACTS
+
–
+
–
NO
C
NC
TERMINAL STRIP A
TERMINAL STRIP B
145 Baytech Drive
San Jose, Califo rnia 95134
127 Jetplex Circ le
Madison, Alab ama 35758
(800) 837-4546
www.verilink.com
FAX-On-Demand
(800) 957-5465
Technical Assistance Center
(800) 285-2755
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