Digital alarm output
For digitalalarm output(system errorsonly):
Connectan externalTTL device: positive terminalto pin 14; negative terminalto pin 12.
logic low: OK
logic high: alarm
Supply voltages
+5VDC is available on pin 13. +12VDC is available on pin 15. Tolerances better than 10%. Both supplies are
stabilised. Ground to pin 11or pin 12.
Reference either
ground
Ground
DC Voltage
Max load
Pin
Typical use
+5V
10mA
13
Voltage supply for inputs using remote switch.
+12V
10mA
15
Possibly voltage supply for inputs using remote switch
How to get into auto speed operation
Check that the pump is ready to run before remote/automatic operation. Signals may start the pump
withoutwarning.
•
Pressthe
AUTO
key to selectautomaticoperation. A beep soundsand the LED beside the
AUTO
key
illuminatesto indicate thatthepump isunder automaticspeed control.
•
The pump responds to the analogue signal as soon as this is done. Auto-start is automatically
switched on. Theonly keysactive are
STOP, AUTO
and
DIRECTION
.
•
If remote direction input is active and the direction-enable link is applied, the
DIRECTION
key is
disabled. If keypad lock isset, only
STOP
and
START
are active.
STOP
stopsthe pump and switchesit
to manual control (or, if the pump was put into auto mode by remote switching, to the auto-stop
state—see Alternatively, below). START pressed for more than 1 second togglesthe keypad lock on
or off.
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