User Manual

TMCM-1630 Hardware Manual (Rev. 1.02 / 2012-JUN-11) 11
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5.2.3 Open drain outputs
The module offers three open drain outputs. Two of them (LED-Temp and LED-Curlim) power on-board LEDs,
also. Please refer to paragraph 6 for more information about the LEDs.
Pin
Label
Description
6
Tacho
This pin outputs a tacho impulse, i.e. toggles on each hall sensor
change
8
LED-Temp
+5V TTL output: Toggling with 3Hz when temperature pre-warning
threshold is exceeded, low when module shut down due to
overtemperature
9
LED-Curlim
Low when module goes into current limiting mode
Table 5.5: Outputs of the TMCM-1630
220R
GND
GND
10k/1%
Header
Tacho
LED-Temp
LED-Curlim
1kOO/1%
+VM
+5V
Figure 5.3: Internal circuit of the outputs