Thermo Scientific Accela Open Autosampler Hardware Manual page 55

Electrical Connections for 2- or 4-Injection Valves
Thermo Scientific
DLW Option Installation in Combination with 2- or 4- Injection Valves
You can combine the DLW option with Open Autosampler systems using a setup of 2- or
4-injection valves (Figure
wash station are attached to the injection unit.
Figure 31. DLW option in combination with 4-injection valves
The sample is taken up into the Holding Loop, and the syringe is actually the prepared
reservoir for the following wash step after the loop filling and injection step.
Following this concept allows for more than one injection valve in the Open Autosampler
configuration. Neither a special setup nor additional modules are necessary to inject into and
clean one or more valves connected to the Open Autosampler system. As mentioned, the
crucial DLW parts are attached to the injection unit at any available position.
Connect the valve drives as shown in
Because you can only use the DLW option in combination with the PAL-xt systems, you must
connect the first cable from the PAL Interface MODBUS to the serial valve drive connector
A. Each drive is connected with daisy-chain cabling.
The last serial drive connector B remains open or unused. The interface MODBUS provides
the electrical current and interface logic.
31). The concept of the DLW option is that the crucial parts of the
Figure 32.
2
Installing the Accela Open Autosampler
Installing the Autosampler and DLW
Accela Open Autosampler Hardware Manual 37