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XMS Instruction Manual
Channel 1 is hazardous energy
All outputs are ES1 in accordance with 62368-1 with the exception of the 48V model which is ES2.
Input Connections:
Molex KK type 3 pin (2 pin for XMSxD models) header: 7A/250V Max.
Cooling for units with customer supplied air (all models except –KF and TF)
The following method must be used for determining the safe operation of PSUs.
The components listed in the following table must not exceed the temperatures given. To determine the component
temperatures the heating tests must be conducted in accordance with the requirements of the standard in question.
Consideration should also be give to the requirements of other safety standards. Test requirements include: PSU to
be fitted in its end-use equipment and operated under the most adverse conditions permitted in the end-use
equipment instruction manual/specification and which will result in the highest temperatures in the PSU. To
determine the most adverse conditions consideration should be given to the end use equipment maximum operating
ambient, the PSU loading and input voltage, ventilation, end use equipment orientation, the position of doors &
covers, etc. Temperatures should be monitored using type K fine wire thermocouples (secured with cyanoacrylate
adhesive, or similar) placed on the hottest part of the component (out of any direct airflow) and the equipment should
be run until all temperatures have stabilised.
Cooling for unit temperature table (see layout drawings below):
Circuit Ref.
J1
C8, C7
L2, L4
L6
ASY 5 D7
C14, C11, C21, C22,
C10, C23, C24, C6, C18
C26
RLY 1
U1, U2, U3, U5, U6, U7
TX1 Standby
TX3 500W
TX3 350W
ASY 6 Q3
ASY 4 Q1
ASY 3 Q4
C13
C9
L3, L5
L7
C5, C16, C15, C4, C17,
C20, C19
† The higher temperatures limits in brackets may be used but product life may be reduced.
Description
input connector
X cap
Common mode choke winding
Series mode choke winding
Bridge diode
Y capacitors
Capacitor
Relay
Opto-coupler
Windings and core
Windings and core
Windings and core
Boost FET
Forward FET
Output FET
Boost capacitor
Boost capacitor
Boost choke winding
Channel 1 output choke
Electrolytic capacitors
Max. Temperature
(°C) †
105
100
130 (145)
130
125 (130)
100
85 (105)
100
100
120 (130)
120 (130)
100 (110)
127 (130)
127 (130)
127 (130)
80 (105)
70 (105)
130 (140)
130 (140)
80 (105)
Page 17 of 24
260217 issue 13, Nov 2021
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