Power Supply Of Pwm 8 And Encoder Via The Encoder Output (Out) Of The Interface Board - HEIDENHAIN PWM 8 Operating Instructions Manual

Basic circuit diagram of the power supply of the encoder with the power supply unit connected:
p§F˜’¤zzd©˜¤ma›
The standard setting of the encoder power supply is 5V; when operating with HTL interface board without
subsequent electronics 12V.
Current consumption of PWM 8 when powered via DC-IN socket:
(measured with 11µApp interface board)
Voltage at DC-IN
PWM 8 current consumption
PWM 8 current consumption
with encoder (100 mA)
6.1.2 Power Supply of PWM 8 and Encoder via the Encoder Output
(OUT) of the Interface Board
PWM 8 can be integrated into the encoder circuit. For this purpose the subsequent elec-tronics must be
connected to the encoder output (OUT) of the interface board. The supply voltage for PWM 8 is taken from
the subsequent electronics. In order to reduce the power consumption of the subsequent electronics, the
background lighting of the display is auto-matically switched off!
Basic circuit diagram of the power supply of encoder and PWM 8 with subsequent electronics
connected (with interface board 11µApp, 1Vpp, TTL):
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ssk zz:˜s zz:˜
 ˜G
˜
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10 V
500 mA
580 mA
 ˜G
p›Fm›a"d
’FVFV"›apm
— ˜4pm¦F›F
zp›Fm›a"d˜’FVFV"›apm
12 V 15 V
420 mA 350 mA
480 mA 400 mA
— ˜4pm¦F›F
§a›4^amV˜FV¤d"›p
- 30 -
m›Fm"d˜ ˜G˜
zp§F˜’¤zzd©
20 V 24 V
270 mA 230 mA
310 mA 260 mA
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zp§F˜’¤zzd©
""h˜¢
Odp"›amV
Oph˜
4¤’›phF
30 V
200 mA
220 mA