Contact3, 2 setting contacts for operating solenoid valves – Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G User Manual

Page 182

IM 11M12D01-01E

10-20

10.5.2 Setting Contacts for Operating Solenoid Valves

The same contacts used for operating solenoid valves to perform channel switching
during Auto-calibration (SV-CH1 to SV-CH8) are also used for starting and stopping
blowback gas. Therefore, when both blowback and Auto/Semi-auto calibration are used,
contact outputs used for operating solenoid valves need to be assigned as shown in Fig.
,10.24. Refer to Fig. 10.26 for blowback timing chart.

For wiring and piping of blowback solenoid valves, refer to Subsection 4,1,5,
"Blowback piping" and Section 5.3, "Wiring and Piping Examples."

SV-CH 1

SV-CH 2

CH1 detector

CH2 detector

N.C.

N. O

AV550G

F10.24E.eps

Solenoid

valve switch

Blowback gas

CAL gas

Fig 10.24

1) From the basic panel display touch [Setup] key; on the Execution/Setup display which

appears, select [Commissioning] then [Contact setup].

2) Select a contact that is not already assigned to another function, then select [Others].
3) For this contact, turn [Blow back] to [ON].

Enter

F10.25E.EPS

Contact3

Others

᭜

Warm up:

OFF

᭜

Range change:

OFF

᭜

Maintenance:

OFF

᭜

Calibration:

OFF

᭜

Indication check: OFF

Blow back:

OFF

᭜

Third gas:

Fig. 10.25 Assigning Solenoid Valve Switching Contact