Power Supply Module - Ametek UPLC-II System Manual

UPlC-ii™ System manual
Description
125/250V Power Supply
125/250V Power Supply w/ PS Aux
48V Power Supply
48V Power Supply w/ PS Aux

2.4.1 Power Supply Module

Description
The Power Supply (PS) module takes station bat-
tery voltage or 120Vac input and converts it into 4
dc output voltages (+/– 16.5V and +/– 6.0V) need-
ed for the UPLC-II™. It mounts into the far left
slot of the chassis with the redundant power sup-
ply right beside it when used. The two Power
Supply modules have separate input terminal
blocks and can be run off of different voltages if
desired. The Power Supply Module has an alarm
relay to indicate failure of the module. This is a
"fail-safe" alarm and is therefore energized if the
module is functional. The UPLC-II™ was
designed without an ON/OFF switch for the Power
Supply in order to circumvent a common point of
failure. Instead a jumper, J3, is available for keep-
ing the PS in the off state when plugged in if
desired.
An optional auxiliary Power Supply daughter
board is available for providing an isolated lower
voltage output to drive electromechanical relays
requiring 20 or 200 mA as well as a 20V output
option. This board is soldered onto the main board
via headers. When used, it is put in series with one
of the UPLC-II™ outputs that connects to an EM
protective relay or other device requiring 20/200
mA current or low voltage.
Customer interface points:
Main board Jumpers/LED/Fuses
• PWR ON/PWR OFF Jumper (J3) –
Normally in PWR ON position. Place in
PWR OFF position for disabling the Power
Supply when it is desired to have the module
plugged in with input power applied but
have the UPLC-II™ remain powered off.
• PS FAIL Contact Jumper (JMP1/2) – For set-
ting the Power Supply fail alarm contact out-
Page 2–10
Part Number Digit 3 & 4 of
UPLC-II Cat. No.
CU20-PS1MN-001
CU20-PS1MN-101
CU20-PS1MN-002
CU20-PS1MN-102
put on TB1-5 & 6 or TB2-5 & 6 for normally
open (N.O.) or normally closed (N.C.)
• PS OK LED (LE1) – Status LED for the PS,
when on, it indicates that all 4 dc output volt-
ages are within tolerance and not too low in
voltage. This LED has a corresponding virtu-
al LED on the home web page of the UPLC-
II™.
• Fuses (F1/F2) – For disconnecting input
when drawing too much current due to a fail-
ure on the PS.
Auxiliary board (low voltage output) Jumpers
• 20/200mA Jumper (JMP1/2) – For choosing
20 or 200 mA for driving EM relays.
• 20V/46V Jumper (JMP3) – For choosing
between 20V output versus 46V (20mA) out-
put option.
The jumpers on the auxiliary power supply board
need to be set to give the desired output
voltage/current per the following:
• 20mA for an EM relay with about 2200 Ω
coil resistance:
JMP1/JMP2 = 46V/20V (20mA).
• 200mA for an EM relay with about 25 Ω coil
resistance: JMP3 = setting does not matter,
and JMP1/JMP2 = 8V (200mA).
• 20V output for some other applications:
JMP3 = 20V, and JMP1/JMP2 = 46V/20V
(20mA).
Backplane Test Points
• The 4 dc voltage outputs are labeled toward the
bottoms of the DIN connector pins close to TB1 &
TB2 and can be verified with a meter from the rear
of the chassis with the cover off if the "PS OK"
LED is off.
1
2
4
8
JMP3 = 46V, and