Honeywell HVAC400x Applications Manual page 98

HVAC400X – APPLICATION MANUAL
Selection number Selection name
4 Start-REV
A
0 Hz
B
Control signal (CS) 1 activates and causes the output
1. frequency to increase. The motor operates forward.
because CS2 is inactive.
CS2 activates and causes the direction to start to
2.
change (FWD to REV).
CS2 becomes inactive, which causes the direction to
3. start to change (REV to FWD) because CS1 is still
active.
4. CS1 becomes inactive and the frequency goes to 0.
CS2 activates, but the motor does not start because
5.
CS1 is inactive.
CS1 activates and causes the output frequency to
6. increase again. The motor operates forward because
CS2 is inactive.
A. FWD.
B. REV.
C. Output frequency.
D. Set frequency.
E. Set frequency REV.
EN2B-0417GE51 R0719
Suite: I/O START/STOP LOGIC 4
Description
You can use this function to prevent an accidental start. Before you
can start the motor again, you will have to open the start/stop contact.
CS1 = Start/stop forward.
CS2 = Start backwards if CS1 = CLOSED.
C
1 2 3 4 5 6
Fig. 16. I/O A Start/stop logic = 4
7 8 9 10
Legend
The Run enable signal is set to OPEN, which causes
7. the frequency to go to 0. Configure the Run enable
signal with parameter P3.5.1.10.
Before the drive can start, you must open and close
8.
CS1 again.
The STOP button on the keypad is pushed and the
9. frequency that is fed to the motor goes to 0. (This signal
only works if P3.2.3 Keypad Master Stop is Enabled.).
Before the drive can start, you must open and close
10.
CS1 again.
11. CS1 becomes inactive and the frequency goes to 0.
F. Run enable.
G. Ctrl signal 1.
H. Ctrl signal 2.
I. --
J. Keypad stop button.
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