Honeywell HVAC400x Applications Manual page 96

HVAC400X – APPLICATION MANUAL
Selection number Selection name
2 Forw-STOP (edge)
A
0 Hz
B
Control signal (CS) 1 activates and causes the output
1.
frequency to increase. The motor operates forward.
CS2 activates, but it does not have an effect on the
2. output frequency because the direction that is set first
has the highest priority.
CS1 is becomes inactive and causes the direction to
3. start to change (FWD to REV) because CS2 is still
active.
CS2 becomes inactive and causes the frequency to go
4.
to 0.
CS2 activates again and causes the motor to accelerate
5.
(REV) to the set frequency.
CS2 becomes inactive and causes the frequency to go
6.
to 0.
A. FWD.
B. REV.
C. Output frequency.
D. Set frequency.
E. Set frequency REV.
EN2B-0417GE51 R0719
Suite: I/O START/STOP LOGIC 2
Description
You can use this function to prevent an accidental start. Before you
can start the motor again, you must open the start/stop contact.
CS1 = Start/stop forward (edge)
CS2 = Start/stop backwards (edge)
C
1 2 3 4 5 6
Fig. 14. E/S A Start/stop logic = 2
7 89 10 11 12 13
Legend
CS1 activates and the motor accelerates (FWD) to the
7.
set frequency.
The Run enable signal is set to OPEN, which causes
8. the frequency to go to 0. Configure the Run enable
signal with parameter P3.1.1.10.
The Run enable signal is set to CLOSED, which does
9. not have an effect because a rising edge is necessary
for the start, even if CS1 is active.
The STOP button on the keypad is pushed and the
10. frequency that is fed to the motor goes to 0. (This signal
works only if P3.2.3 Keypad Master Stop is Enabled.).
CS1 is opened and closed again, which causes the
11.
motor to start.
CS1 becomes inactive and the frequency that is fed to
12.
the motor goes to 0.
F. Run enable.
G. Ctrl signal 1.
H. Ctrl signal 2.
I. --
J. Keypad stop button.
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