25
the 2
nd
week. All programming functions are the same and SEL will scroll through each setting.
Pressing MODE will go back to the WAIT menu at any point in the programming.
From the WAIT mode, pressing MODE will move to the MANUAL menu. Check to
make sure that the pump speed is set at the rate desired during the timed operations. If
not, use the UP and DOWN keys to change the pump speed.
Pressing MODE again will display the current time and date. The pump is now
operating in the TIMER mode and will come on at the next programmed timer
operation.
3.5 STOP
Function
Additionally, the EH pumps can be controlled in start-stop mode. In this mode,
AC power is applied continuously and pump operation is stopped by completing
the circuit between the positive ‘stop’ and common terminals inside the control
module (R Control Module: 5 (positive) and 6 (common) Y Control Module: 7
(positive) and 8 (common)). A switch or solid state device capable of switching
10 VDC at 2 mA for the R-Module and 5VDC at 2 mA for the Y-Module.
should be used. Switch closed = pump stopped, switch open = pump running at
the speed determined by the frequency knob setting. This feature eliminates the
need for a high voltage, high current AC relay to start and stop the pump. (See
Figures 9 and 11.)
If using the Y Control Module and the pump is operating in external digital
mode, any pulses received while the pump is stopped will be saved (up to a
maximum of 255). When pump operation resumes, saved pulses will alow the
pump to “catch up” by producing the correct number of pump strokes that should
have occurred while it was stopped.
3.6
AC Power Interruption (Y-Control Module)
If AC power is interrupted, the pump will power up as shown below:
State preceding power OFF
State following power ON
WAIT WAIT
Run Manual
Run Manual
Run external
Run external
Set EXTernal mode
WAIT
Set External values
WAIT
Summary of Contents for EH Series
Page 46: ...Notes...
