QM range App Note, document number 260283, rev 15
Page 39 of 48
The Electrical Fast Transient (EFT) immunity test to EN 61000-4-4 and Conducted RF Immunity to EN 61000-4-
6 have tests to be applied to DC Power Ports and Signal Ports and Control Ports where the length of the
connection is greater than 3m. Due to practical limitations of voltage drops down cables this test was not
applied to output voltage modules of less than 12V nominal.
Earth star point
Where the AC supply enters the equipment, this should be taken to a 'star point' chassis mounted earth point.
Ensure wiring and earth grounding methods comply with the appropriate safety standards and National
Electrical Codes.
ESD Protection
Where signal or control ports are connected to a user accessible panel (for example PSU inhibit to a switch,
module good to an indicator circuit, etc.), these ports must be protected from electrostatic discharges. This can
be done by selecting suitable panel controls or by fitting ESD suppression devices to the connections on the
panel.
Switching frequencies
Min
kHz
Nom
kHz
Max
kHz
Converter
106
125
144
QM Auxiliary supply
82
100
119
HPGO Standby supply
90
100
110
SA Module
70
125
SB, YC Module
70
-
110
SC, YF, ZC, ZF Module
65
-
100
DM Module CH1
100
-
140
DM Module CH2
– 3.3V
456
518
580
DM Module CH2
– 5V
456
518
580
DM Module CH2
– 12V
204
227
249
DM Module CH2
– 24V
273
307
340
DH, YB Module
100
-
140
ZD Module
65
-
110
Steady state condition
11. MOUNTING
Please refer to Installation Manual for allowable orientations and any possible derating.
Mount using a minimum of four of the threaded mounting inserts.
