Preliminary User's Manual l TQMa65xx UM 0001 l © 2021, TQ-Systems GmbH
Page 27
6.
SAFETY REQUIREMENTS AND PROTECTIVE REGULATIONS
6.1
EMC
The TQMa65xx was developed according to the requirements of electromagnetic compatibility (EMC). Depending on the target
system, anti-interference measures may still be necessary to guarantee the adherence to the limits for the overall system.
Following measures are recommended:
•
Stable ground conditions (sufficient ground planes) on the carrier board.
•
A sufficient number of block capacitors at all supply voltages
•
Keep fast or constantly clocked lines short; avoid interference with other signals
by means of distance and/or shielding; pay attention not only to the frequency but also to the signal rise times.
•
Filtering of all signals which are connected externally (also "slow" and DC voltage signals can emit HF indirectly).
•
For critical applications, an EMC shielding hood should be used.
6.2
ESD
In order to avoid interspersion on the signal path from the input to the protection circuit in the system, the protection against
electrostatic discharge should be provided directly at the inputs of a system. As these measures always have to be implemented
on the carrier board, no special protective measures were provided on the TQMa65xx.
The following measures are recommended for a carrier board:
•
Generally applicable:
Shielding of inputs (shielding connected well to ground / housing on both ends)
•
Supply voltages:
Suppressor diodes
•
Slow signals:
RC filtering, Zener diodes
•
Fast signals:
Protection components, e.g., suppressor diode arrays
6.3
Operational safety and personal security
Due to the occurring voltages (
≤
5 V DC), tests with respect to the operational and personal safety have not been carried out.
6.4
Shock and vibration
Table 22:
Shock resistance
Parameter
Details
Shocks
According to DIN EN 60068-2-27
Shock form
Half sine
Acceleration
30 g
Residence time
10 msec
Number of shocks
3 shocks per direction
Excitation axes
6X, 6Y, 6Z
Table 23:
Vibration resistance
Parameter
Details
Oscillation, sinusoidal
According to DIN EN 60068-2-6
Frequency ranges
2 – 9 Hz, 9 – 200 Hz, 200 – 500 Hz
Wobble rate
1.0 octaves / min
Excitation axes
X – Y – Z axis
Amplitude
2 Hz …
9 Hz: 3.5 ms
-2
9 Hz … 200 Hz:
10 ms
-2
200 Hz … 500 Hz:
15 ms
-2