5.4 ALARM INTEGRATION
In order for the HPL110A to stop the motor in the event of an alarm, the alarm relay
(terminals 9, 10 and 11) must be integrated into the motor starter circuit such that it
duplicates the effect of activating the STOP button.
One possibility is shown in Figure 5.4 where the NC relay contacts (terminals 9 and 10)
are connected in series with the STOP button. When an alarm occurs, Terminals 9 and
10 change from closed to open which is equivalent to pressing the STOP button.
If an Alarm enunciation light is required, it can be connected between Terminal 11 and
neutral to illuminate when an alarm state exists.
5.5 RESET FUNCTION
The HPL110A may be reset by any one of three methods:
Manual Reset:
Depress the Reset key on the front panel.
Remote Reset:
By wiring an Auxiliary reset button across contacts S1 to GND
(pins 15 to 17) on the HPL110A, a remote reset may be achieved.
Automatic Reset:
By wiring a jumper across contacts S1 to GND, the HPL110A
operates in automatic reset mode with the Hysteresis function active;
this is typically only used for two-point control applications and not
for protection applications.
12
L1
L2
L3
M
START
17
16
STOP
11
10
NC
NC
NC
9
C
NO
HPL110A
12
13
PE
14
S1
15
S2
1 L1
3 L2
5 L3
7 k
8 l
GND 17
NC
18
16
F i g u re 5 . 4
