Hydrotech MP Series PULSAtron - Manual (Page 12)

12
HELPFUL HINTS
You can always get to where you want to go simply by accepting or rejecting choices presented.
If you find yourself within a menu where you don't want to be, keep selecting No until you return to the main menu.
If you go past the desired selection by mistake, keep selecting No and the pump will take you back to it.
If you press an inappropriate button, you will be notified by a message which lasts for several seconds.
A partly flashing display requires your response.
A flashing question mark requires a Yes or No answer.
Flashing arrows require an Up or Down numerical adjustment. To make large numerical adjustments quickly, hold
down either the Up or Down arrow buttons. The value in the display will change at an increased rate.
A fully flashing display is an alarm.
If power is interrupted, the pump will automatically resume operating where it left off when power is restored. The
pump will remember this for years while power is off.
CONTROL OPTIONS
FIXED RATE
The pump operates continuously at the set rate over the span 1-100% of maximum.
EXTERNAL PULSE CONTROL - STRAIGHT PULSES
Each pulse received from the external signal port causes the pump to immediately stroke once at a rate limited by
the maximum rate of the pump, 125 strokes per minute. If any pulses are received at a faster rate, the
Pulse Rate
High alarm is triggered, during which the pump operates at its maximum rate and does not respond to the excess
pulses.
In the Pulse Storage option, any pulse frequency received which is at a higher rate than the pump can respond
to (125 contacts per minute), will cause excess pulses to be accumulated in memory. The pump will work off the
excess pulses at a rate of 125 strokes per minute when the signal level drops below the maximum rate. If the
accumulation exceeds 9,999 pulses, memory storage capacity is exceeded and the
Pulse Overflow alarm is
triggered. During the Pulse Overflow condition the pump operates at 125 strokes per minute; when the incoming
rate drops below 125 pulses per minute, normal Pulse Storage operation resumes, starting with a full memory.
EXTERNAL PULSE CONTROL - DIVISION
The pump operates as described above except that incoming pulses are divided by a value from 1 to 999 prior to
actuating the pump. For example, at a setting of 5, every fifth incoming pulse causes the pump to stroke once.
The Pulse Storage option operates as described above.
Pulse division makes it possible to "tune" the pump by adjusting its response to an external pulse signal, such as
that from a flowmeter, which is of too high a frequency to cause the desired feed by directly stroking the pump.