Johnson Controls P70 Mode D'emploi page 7

Figure 7: Typical Wiring for 4-wire 2-circuit Switch
(P70G, and H Models)
Table 1: Single Pressure Controls Switch Action, Low Event, High Event, and Models
Switch and Action
Single-Pole Single-Throw
(SPST) Open-low
Single-Pole Single-Throw
(SPST) Open-high
Single-Pole Double-Throw
(SPDT)
4-Wire, 2-Circuits,
1-NO, 1-NC
Open-low
4-Wire, 2-Circuits,
1-NO, 1-NC
Open-high
Double-Pole Single Throw
(DPST)
Open-low
Double-Pole Single Throw
(DPST)
Open-high
6 P70, P72, and P170 Controls for Low Pressure Applications Product/Technical Bulletin
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Low Event
Cut Out
(Opens Line to M2)
Cut In
(Closes Line to M2)
Opens 1 to 2 and
closes 1 to 3
Cut Out
(Opens M2 to Line and
Closes M1 to Line)
Cut In
(Closes M2 to Line and
Opens M1 to Line)
Cut Out
(Opens M1 to Line and
M2 to Line)
Cut In
(Closes M1 to Line and
M2 to Line)
Figure 8: Typical Wiring for DPST Switch
(P72A, and B Models)
High Event
Cut In
(Closes Line to M2)
Cut Out
(Opens Line to M2)
Closes 1 to 2 and
Opens 1 to 3
Cut In
(Closes M2 to Line and
Opens M1 to Line)
Cut Out
(Opens M2 to Line and
Closes M1 to Line)
Cut In
(Closes M1 to Line and
M2 to Line)
Cut Out
(Opens M1 to Line and
M2 to Line)
Models
P70A, P70B, P170A
P70C, P70D, P170C, P170D
P70E, P70F
P70G, P70H
P70J, P70K, P170K
P72A, P72B
P72C, P72D