Controlling The Valve Drives S 6 /-12 /-16; Manual Control; External Control Of The Valve Drives S 6/-12/-16 - Knauer Smartline serie Handbuch

Controlling the Valve Drives S 6 /-12 /-16

Controlling the Valve Drives S 6 /-12 /-16

Manual control

In order to operate the electrical valve drives S 6/-12/-16 manually, the DIP 2
must be in the OFF position.
2 position valves
The positions LOAD and INJECT can be set by directly using the
keys.
In the manual mode it is still possible to integrate the valve drive into a more
complex chromatographic system. By switching the valve to the INJECT position,
the OUT connector is short circuited. This signal can start time dependent gradient
programs. The OUT connector is only active when the valve is in the INJECT
position.
To avoid unintentionally restarting the program, turn the valve back to the
LOAD position before the current program is completed.
6 , 12, and 16 position valves
Any valve position can be achieved in an increasing order by pushing the
as often as necessary. The steps 6
increasing order. The opposite steps: 1
decreasing order. To decrease a step press the
Similar to the two position valves, the OUT connector can be used to control other
instruments. The output is only active if the valve is in the HOME position (position
1). It is inactive if the valve is in positions 2 to 6, 2 to 12, or 2 to 16.

External Control of the Valve Drives S 6/-12/-16

The valve drive S 6/-12/-16 can be controlled with external contacts and can also
send signals to other instruments. Communication is possible via the RS-232
interface or using the additional remote control connector (Pos 2 in Fig.
If more than one valve drives are integrated into the system they should be
controlled in the same control mode (RS-232 or WAGO). Specifically, if a
coupled-columns technique is required.
Control via RS-232 interface
To control any valve via the RS-232 interface the drive has to be set to the
analog mode (DIP switch 2 OFF).
The valve drives can be integrated into HPLC systems which are controlled with
software packages such as ChromGate
found in the corresponding software manuals.
The control via the serial RS-232 interface at the rear of the instrument, item 1 in
Abb. 4 on page 20, also can be performed with small selfdesigned programs which
can be integrated into non-Knauer software products.
The specifications for data transfer are:
→ →
1, 12
→
6, 1
®
or EuroChrom
9600 baud
8 bit
1 start-bit
1 stop-bit
→
1, or 16 1 are also considered an
→ →
12, or 1 16 are considered a
key.
®
. Instructions can be
11
und
key
4).