Honeywell HVAC400x Applications Manual page 95

Selection number Selection name
1 Forw-BACK
A
0 Hz
B
Control signal (CS) 1 activates and causes the output
1.
frequency to increase. The motor operates forward.
CS2 becomes inactive and causes the frequency to go
2.
to 0.
CS1 activates and causes the output frequency to
3.
increase again. The motor operates forward.
The Run enable signal is set to OPEN, which causes
4. the frequency to go to 0. Configure the Run enable
signal with parameter P3.5.1.10.
The start attempt with CS1 is not successful because
5.
the Run enable signal is still OPEN.
A. FWD.
B. REV.
C. Output frequency.
D. Set frequency.
E. Set frequency REV.
Suite: I/O START/STOP LOGIC 1
C
1 2 3 4
Fig. 13. I/O A Start/stop logic = 1
HVAC400X – APPLICATION MANUAL
Description
CS1 = Start impulse forward edge if CS2 is CLOSED.
CS2 = Stop impulse.
5 6 7 8
Legend
CS1 activates and the motor accelerates (FWD) to the
6. set frequency because the Run enable signal was set to
CLOSED.
The STOP button on the keypad is pushed, and the
frequency that is fed to the motor goes to 0. (This signal
7.
only works if the value of P3.2.10 Keypad Stop Button is
Yes or P3.2.3 Keypad Master Stop is Enabled.).
CS1 activates and causes the output frequency to
8.
increase again. The motor operates forward.
CS2 becomes inactive and causes the frequency to go
9.
to 0.
F. Run enable.
G. Ctrl signal 1.
H. Ctrl signal 2.
I. --
J. Keypad stop button.
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