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Basic circuit diagram of the power supply of encoder and PWM 8 with subsequent electronics
connected (with HTL interface board):
˜’¤*’F„¤Fm›˜
FdF4›pma4’˜
Current consumption of PWM 8 powered by subsequent electronics:
(measured with 11µApp interface board)
Supply voltage at interface
board OUT
PWM 8 current consumption
(without background lighting)
PWM 8 current consumption
with encoder (100 mA)
From the table can be seen that PWM 8 and encoder can only be powered by subsequent electronics
equipped with power supply units with large power reserve.
Note:
When using (long) connecting cables between the subsequent electronics and PWM 8 the voltage drop may
be considerable (current on the line to and from the encoder) which additionally reduces the voltage of the
subsequent electronics!
In the PWM 8 MODE: MEASURE AMPLITUDES the current consumption from the subsequent electronics is
approx. 0.4 A higher!
Note:
If parameter P2: U-MSYS EXTERN is set to FLOATING, potential segregation and the switching regulator in
PWM 8 can be switched off by setting P2 to FROM CUSTOMER. This reduces the power consumption from
the subsequent electronics (see section 5.2.2, PARAMETERS, Parameter P2).
When using the HTL interface board, parameter P2 is not available and potential segregation not possible!
˜G
—
˜4pm¦F›F
4.5 V
4.8 V
1.15 A
1.05 A
1.4 A
1.25 A
- 31 -
m›Fm"d˜ ˜G˜
zp§F˜’¤zzd©
5 V
5.2V
1.0 A
0.95 A
1.2 A
1.15 A
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