Sirius 250 Handbook Part Number 17132
Input markings and symbols
Mechanical parameters
DO NOT USE MOUNTING SCREWS WHICH PENETRATE THE UNIT BY MORE THAN 4.5 MM.
Weight 2 Kg dependent upon confi guration.
Operation
Temperature 0 to 50
0
C (derating 2.5%
0
C above 50
0
C to 65
0
C -Not covered by approvals).
Humidity 5 to 95% RH non-condensing. Air Pressure 78kPa to 106kPa.
Altitude -200m to 3000m
Storage and Transportation
Temperature -40
0
C to +85
0
C. Humidity 5% to 95% RH non-condensing.
Air Pressure 54kpa to 106kpa. Altitude -200m to 5000m.
Vibration and shock
10-200Hz @ 1.5G sinewave, 20G for 15 minutes in 3 axes random vibration / 3000 bumps, 10G
(16mS) half sinewave.
Cooling
These units may be mounted in any orientation, unless stated otherwise. The airfl ow around the
power supply air inlets and outlets must not be impeded when it is fi tted in the end use application.
Environmental parameters
Level of insulation
Dielectric Strength testing is carried out as follows:
Primary mains circuit to earth 2.25-2.35 KVDC;
*Primary mains circuits to transformer core 4.25-4.35 KVDC;
*Primary mains circuits to secondary 4.25-4.35 KVDC.
Outputs to each other and to earth are isolated to 100 VDC except:
i) Output 1 and output 2 on the 5/3 and 5/12 base boards.
ii) Outputs of twin D module to each other.
*Important Note: This test is not possible with Y capacitors fi tted to the unit as damage to these
capacitors will occur. It is also necessary to short circuit the outputs together and to earth.
EMC performance
Emissions :
EN55022 Conducted RFI-Class A or B (depending on product - Consult Technical
Sales). Radiated RFI - Class A. EN61000-3-2 - Pass - Class A and D. EN61000-3-3 - Pass
Immunity:
EN61000-4-2 - Level 4 Criteria B EN61000-4-3 - Level 3 Criteria B
EN61000-4-4 - Level 4 Criteria B
EN61000-4-5 - Level 3 Criteria B (installation class 3)
EN61000-4-6 - Level 3 Criteria B
EN61000-4-11 - Pass
VDE 0160 - Class 2 (Clause 7.3.1.1.)
General installation instructions
i) The Sirius family of component power supplies is designed for use within other equipment or
enclosures which restrict access to authorised competent personnel only. For safe installation and
operation of this product, carefully follow the instructions below.
ii) The unit cover/chassis is designed to protect skilled personnel from hazards. They must not be
used as part of the external covers of any equipment where they may be accessible to operators,
since under full load conditions, part or parts of the unit chassis may reach temperatures in excess
of those considered safe for operator access. On units with end fans and IEC 60320 connector, the
fan and connector end of the unit is permitted to be user accessible, this also applies to the top fan
on units where this is fi tted.
Enclosures made with punched ventilation grilles are not to be user accessible.
iii) The mains switch, where fi tted, is a single pole device and must not be used as the main discon-
nect device. The IEC 60320 mains appliance coupler is intended to be the main disconnect device
for the Sirius power supply. The switch is marked ‘I’ and ‘O’. The ‘I’ indicates on and ‘O’ indicates
off.
CAUTION: Where the IEC 60320 is fused, then it is double-pole/neutral fused. When the fused IEC
inlet is fi tted, the IEC input must not be user or externally accessible in the end use equipment.
iv) These products are Class 1 and must therefore be reliably earthed and professionally installed in
accordance with the prevailing electrical wiring regulations and the safety standards covered herein.
v) These products are IPX0 and chemicals/solvents, cleaning agents and other liquids must not be
used.
These products carry the following approvals:
UL60950-1 and CSA22.2 No 60950-1 - UL Recognised. C-UL for Canada.
IEC/EN60950-1 - CE mark.
CE marking when applied to any Sirius product, indicates compliance with the Low Voltage Direc-
tive (2006/95/EC) In that it complies with EN60950-1.
Safety approvals
alternating current (a.c.).
direct current (d.c.).
danger, shock hazard.
caution, refer to supplementary documents.
Customer Signals
Inhibit (Pin1)
Connecting Pin1 (Inhibit) to Pin5 (Ch1 –ve sense) via open-collector driver or relay/switch contact
shuts off all DC outputs (cooling fan continues to operate).
Pin1 is internally pulled high via 2K2 resistor to approximately 5Volts with respect to Pin5.
AC Fail (Pin2)
Pin2 (AC Fail) is an open-collector output referenced to Pin5 (Ch1 –ve sense) that is normally low
and goes high at least 5mS before DC outputs are lost.
Maximum sink current is 50mA, maximum external open circuit voltage is 45V.
Ch1 / Ch2 sense (Pins3,4,5,6)
Connecting sense terminals to the load will compensate for power cable voltage drop under load
conditions. With sense terminals connected, the voltage drop along any power cable should not be
allowed to exceed 0.5volts.
The sense terminals can be left unconnected if remote sense is not required (sense terminals are
internally connected via a 10 ohm resistor to the corresponding power terminal).
Sense cables should be connected as twisted pairs (+ve and –ve sense) with at least 1 twist
per centimetre and sense cable harness should be kept separate from the power cable harness
wherever possible.
Customer signals are available via 6-way connector (PCB reference J9) adjacent to output 1
terminals. A connector kit (Molex housing 90142 and Molex crimp pins 90119-2109) is supplied
with each PSU. Pin designations for this connector are as follows :
Connection details
Input Connections
Input tabs - 6.3mm x 0.8mm, tin plated brass, rated 15A.
Internal fuse (F1) 5 x 20mm, F6.3AH/250V.
Output Connections
Output Connector Ratings: 6.35mm fastons are rated at 15A.
PIN
FUNCTION
1
Inhibit
2
A/C Fail
3
Ch2 -ve sense
4
Ch2 +ve sense
5
Ch1 -ve sense
6
Ch1 +ve sense
1
3
2
4
5
6
Maximum screw torque for customer fi xings 0.9Nm
