IWAKI PUMPS PDS-H115, Руководство пользователя

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19
O
pe
ra
tion
Pump setting
Return to origin
Program the origin return behaviour to ensure the motor-driven cylinder to come back to origin before opera-
tion every day. The behaviour should be different depending on whether the home sensor output is ON or OFF
at an input of an origin return signal. See the programming chart below for detail.
■ Home sensor output is "OFF"
■ Home sensor output is "ON"
Operation programming
Operational behaviour can be programmed into two different control modes; Time-based control (via a pulse
controller) and Flow-based control (via a pulse controller or user's PLC). In either mode, the pump runs through
the routine of a discharge process, pause state, suction process and waiting state. See the following charts to
program operation in individual modes.
NOTE
• The cylinder can contract beyond the origin for the offset interval (400 pulses below the origin). Do not ex-
ceed the limit.
• The motor may step out if the waiting time is too short. "Step out" means the motor rotates out of a specified
step angle and number of pulses.
• The maximum discharge flow rate is 2ml/sec, however, discharge pressure may rise sharply depending on liquid
viscosity and piping layout, and may overload the bellows. Observe the maximum discharge pressure.
• The maximum suction flow rate is 2ml/sec, however, suction pressure may fall sharply depending on liquid vis-
cosity and piping layout, and may trigger cavitation. Observe the maximum suction pressure.
Discharge
process
Suction
process
Offset interval (max 400 pulses from origin)
Origin
Input of an origin return
signal (from PLC)
Home sensor output
signal (from pump)
Pump behaviour
Offset interval (max 400 pulses from origin)
Origin
Discharge
process
Suction
process
Input of an origin return
signal (from PLC)
Home sensor output
signal (from pump)
Pump behaviour