Jesco MEMDOS E, Руководство по эксплуатации

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8. Operation
8.1. Stroke length adjustment
ATTENTION!
The stroke length should not be adjusted while the dosing pump is stopped!
Proceed as follows to adjust the stroke length:
1. Turn the mounting screw on the adjusting knob counterclockwise (to the left) to loosen it.
2. Set the stroke length to the required value according to the performance curves (section 6).
3. Retighten the mounting screw, without changing the stroke length setting.
8.2 MEMDOS DX operating elements
The
operating panel has two green LEDs for operation and external control, one red LED for
alarm, one 3-digit multifunctional display and four operator keys.
a
"On" LED (Power)
b
"Extern" LED (ext. control)
c
"Alarm" LED
d
External switch-off connection
e
Level input connection
f
External control connection
g
"Mode" key (operating mode
selection)
h
Selection keys (
▲
,
▼
)
i
"I/O" key (ON/OFF switch)
j
Display
k
Power supply
l
Motor connection
m
Warning alarm relay connection
For connection assignments, see
8.8.
8.3 Switching on/off
The dosing pump is switched on/off using the I/O key. When disconnected, the display shows OFF. When the
contact is opened for external switch-off, the dosing pump is also switched off. The "Extern" LED is also lit.
ATTENTION!
The dosing pump may be switched on/off remotely only by using the external switch-off - not by using the
power supply.
8.4 Operating mode selection
The following operating modes can be set by simultaneously pressing the "Mode" and
▲
or
▼
keys:
• Manual control (internal operation)
• Pulse control (external cycle)
• Analogue control (control signal 0/4...20mA)
In the as-delivered state, the dosing pump is set to manual control.
On
Extern
Alarm
Mode
I/O
MEMDOS DX
a
d
e
f
g
h
i
j
b
c
k
l
m
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