Watson Marlow Pumps 504Du, Руководство пользователя

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6
●
Select the maximum speed: press the
Ù
key and the
Max
key together. Select the minimum speed: press the
Ú
key and the
Max
key
together.
●
The keypad has a locking facility to avoid resetting or tampering. If the pump is stopped, press
Stop
until the padlock symbol illuminates.
If the pump is running, press
Start
until the padlock symbol illuminates. All keys will be disabled except for
Start
and
Stop
. Press these
keys until the padlock symbol extinguishes to unlock the keypad.
●
The pump can be set to automatically restart in its operating state set prior to interruption, or set so that after power is reconnected the
pump will remain stopped. To invoke the Auto-restart facility switch off power to the pump at the mains supply. Press the
Start
key down
when the mains supply is switched back on until the
!
symbol illuminates. Now press
Start
to start the pump. This facility can be
cancelled by turning the mains supply off and then pressing the
Stop
key whilst turning the mains supply back on. The
!
symbol will not
be illuminated.
●
Press
Start
to start the pump. Press
Stop
to stop the pump.
Auto
The pump will accept external control signals through the 25 pin terminal strip on the back panel. Remove the cover plate ensuring that the
gasket is not damaged. Feed the control wires through the cable glands and connect via the spring cage clamps.
Analogue
This function enables the pump speed to be controlled via an external analogue process signal. Pressing Enter at analogue will call a
confirmation of the analogue control signal settings. These can be reset under Setup (see section coving pump setup).
RS232
This facility gives full pump functionality under RS232 closed loop control via the 4 pin terminal strip. Up to 16 pumps can be linked whilst still
retaining individual pump control by using lead PR 0024. A network kit is available from Watson-Marlow which includes Pumpnet 2, a DOS
compatible control program and leads.
Step
to Network in the Main menu and press
Enter.
The pump will now be under RS232 control. The keypad
Stop
key will act as an
emergency stop and disable RS232 settings if pressed.
Connections for RS232 signals, 1 = GND, 2= RX, 3 = TX, 4 = CTS
RS232 cabling shown for CTR handshake
Use only twin shielded RS232 cables.
RS232 settings
Baud = 9600 ; Stop bits = 2 ; Data bits = 8 ; Parity = None ; Handshake = CTR or None; Auto echo = On
The following codes may be used to operate the 504Du under RS232C control. They must be directed to the pump from a computer serial port
(or equivalent). Always terminate each command with a RETURN (ASCII CHR13).
nSP
xxx
Load speed setting
xxx to pump number n
nSI Increment speed by 1rpm for pump n
nSD Decrement speed by 1rpm for pump n
nGO Start pump number n