A732-01-880 Issue D
Page 18
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Operation
Figure 4 - Logic interface schematic
Note:
The tolerance of the power supply can be ±10%. Make sure all the unused pins are not connected.
Table 7 - Pin status on the logic interface connector
Mode
Speed
percentage
Pin 1
Pin 3
Pin 4
Pin 5
Normal
100%
24 V
Link
open
open
Boost
116%
24 V
Link
Link
Link
Idle
67%
24 V
Link
Link
open
1. Speed control pins 3, 4 and 5
Maximum current per pin = 7 mA when linked to pin 1 (24 V)
2. Pump healthy signal
Signal high = normal (maximum permissible current = 100 mA)