20
■ Time based control (when using an Oriental Motor SG9200-2 pulse controller)
An ORIENTAL MOTOR SG9200-2 pulse controller is needed for discharge-time control and an OMROM H3RN-
1 Off-delay timer for suction-time control. A discharge process is made for a discharge time; a time period when
the pump is receiving the discharge signal from the pulse controller, and a suction process starts as receiving
a suction signal from the Off-delay timer. Provide with the pulse controller a pause time [T1] of 0.5 sec or more
between the end of a discharge process and the start of a suction process and a waiting time (at least 1/2 of a
set suction time) [T2] between the end of the suction process and the start of the next discharge process.
NOTE
Observe the formula below when determining a discharge flow rate and a discharge time. Or the pump may break:
Discharge flow rate
(see page 25)
× Discharge time = 12.0ml
(max disch. capacity per shot: see page 25)
or less
<When a discharge flow rate × a discharge time = 12.0ml>
<When the same discharge flow rate × a discharge time < 12.0ml>
A discharge process will becomes shorter.
Discharge
process
Suction
process
Valve delay (user-selectable)
Pause time [T1] : 0.5 sec or more
Waiting time [T2] : 1/2 of suction time or more
Pump behaviour
Suction signal
(from Off delay timer)
Discharge signal
(from pulse controller)
Home sensor output signal
(from pump)
Control signal of discharge-
line air-operated valve
(valve ON during signal input)
Pump setting
Discharge
process
Suction
process
Valve delay (user-selectable)
Pause time [T1] : 0.5 sec or more
Waiting time [T2] : 1/2 of suction time or more
Discharge time
Pump behaviour
Suction signal
(from Off delay timer)
Home sensor output signal
(from pump)
Discharge signal
(from pulse controller)
Control signal of discharge-
line air-operated valve
(valve ON during signal input)
