ALARM RELAYS
There are eight alarm relays that provide normally open or normally closed
contacts for each of the following alarms:
■
Visual Critical
■
Visual Major
■
Visual Minor
■
Audible Critical
■
Audible Major
■
Audible Minor
■
Auxiliary 1
■
Auxiliary 2
POWER SUPPLY 48 PIN CONNECTOR PINOUT
TOTAL ACCESS 4303 PLUS DC POWER SUPPLY
DC SUPPLY
CLEI: SLPOCDBC_ _
DC SUPPLY
PLUS
1202335L1
POWER
TEMP
61202335L1-22A
0401
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
FRONT PANEL LEDs
POWER
●
●
Off
Both –48 VDC fuses blown, power not supplied to the shelf,
or incorrect polarity on the voltage supplied to the shelf
●
Green
Power supplied is the correct voltage and polarity; backplane
and hot insertion voltages correct
●
Amber
–48 VDC input and hot insertion voltage present; no back-
plane voltage
●
Red
–48 VDC input present; no backplane voltage and no hot
insertion voltage
TEMP
●
●
Off Normal
●
Red
Over-temperature condition
DESCRIPTION
The Total Access
®
4303
Plus
DC Power Supply is a removable assembly that provides
the voltages necessary for proper system operation. The unit features LEDs for over-
temperature and DC output, an input fuse, and the ability to be hot-swapped when
used with another DC supply in the same chassis. The supply interfaces to the Total
Access backplane through a 48-pin connector. The unit accepts one or two –48 VDC
inputs from the backplane and supplies –48 VDC fused output for use with external
input logic, +5 VDC as hot insertion bias voltage for modules, and +2.1 VDC for back-
plane termination. In addition, the Total Access 4303
Plus
DC Supply provides alarm
relay ouputs when installed in slot PS-A.
The following features are supported on the Total Access 4303
Plus
DC Power Supply:
■
Thermal limit indicator with open collector output
■
DC status indicator on the 2.1 and 5 volt outputs with open collector output
■
Short circuit protection
■
Compatible with existing Total Access DC Power Supplies (P/N 1200335L1)
SPECIFICATIONS
Specifications
Input Voltage
–42 VDC to –56 VDC
Operating Temperature
–40°C to +65°C
Storage Temperature
–40°C to +85°C
Relative Humidity
Up to 95% noncondensing
Over Temperature Indication
90°C ±5%
–48 VDC Short Circuit Protection
Fused 1-amp slow blow
Backplane Voltage Short Circuit Protection
Self-mending
Compliance
FCC Part 15, UL 60950, NEBS Level III,
GR-1089-CORE
Pin #
Row A Signal
Row B Signal
Row C Signal
1
AUD_CRIT_NO
AUD_CRIT_COM
AUD_CRIT_NC
2
AUD_MAJ_NO
AUD_MAJ_COM
AUD_MAJ_NC
3
AUD_MIN_NO
AUD_MIN_COM
AUD_MIN_NC
4
VIS_CRIT_NO
VIS_CRIT_COM
VIS_CRIT_NC
5
VIS_MAJ_NO
VIS_MAJ_COM
VIS_MAJ_NC
6
VIS_MIN_NO
VIS_MIN_COM
VIS_MIN_NC
7
AUX1_RLY_NO
AUX1_RLY_COM
AUX1_RLY_NC
8
AUX2_RLY_NO
AUX2_RLY_COM
AUX2_RLY_NC
9
–48V_A
PS_OK
PS_TEMP
10
–48V_B
2.1V
PS_PRESENT
11
2.1V
2.1V
2.1V
12
–48V_AB_RTN
2.1V
VCC
13
GND
GND
GND
14
GND
GND
PSRLY_CLK
15
GND
PSRLY_LOAD
PSRLY_DATAIN
16
FR_GND
–48V
PSRLY_DATAOUT
JOB
A
ID
#61202335L1-22A#
