Ross Controls REDUNDANT 2-2 WAY WITH SENSING SERIES 27 User Manual
Series SV27 Sensing Valves
New Product
Information
Sensing Valves PO Check
Solenoid Pilot Controlled
1/8” EPS
1/8” PV
C
Sensing Valves Redundant PO Check
1/8” EPS
1/8” PV
C
1/4” Signal port
1/8” PV
V
Solenoid Pilot Controlled
Pressure Controlled
Pressure Controlled
1/8” PV
C
1/8” EPS
1/8” PV
1/4” Signal port
1/8” PV
1/4” Signal port
V
Pilot Operated Check
Solenoid Pilot Controlled and
Pressure Controlled
Category 2 & 3 Safety Applications
Load Holding
V
Sensing Valve Redundant PO Check
Sensing Valve PO Check
Pressure Controlled
EN 954-1, ISO 13849-1,
other sizes approval pending)
Pressure Controlled
& AS4024-1
(3/4 bodies only,
C
V
STANDARD SPECIFICATIONS:
Solenoid: AC or DC power. Rated for continuous duty.
Standard Voltages: 110 volts AC, 50/60 Hz; 24 volts DC.
Other voltages available.
Power Consumption:
CNOMO Style: 11 VA inrush, 8.5 VA holding on 50 or 60 Hz;
6 watts on DC.
Pacer Style: 87 VA inrush, 30 VA holding on 50 or 60 Hz;
14 watts on DC.
Ambient Temperature: 40° to 120°F (4° to 50°C).
Media Temperature: 40° to 175°F (4° to 80°C).
Flow Media: Filtered air 5 micron recomended.
Inlet Pressure: 40 to 150 psig (2.8 to 10 bar).
Pilot Pressure: Equal to or greater than inlet pressure.
Switch Current/Voltage Max.: 2.5 A/120 volts AC.
Switch Current/Voltage Min.: 50 mA/24 volts DC.
NOTE: Electrical life of switch varies with conditions and
voltage; rated in excess of 15 million cycles.
GENERAL:
ROSS’ new Series SV27 Sensing Valves Pilot Operated
Check, based upon the proven Series 27 valve family, combine
the tough, dirt tolerant characteristics of poppet technology with
sensing for actual internal position and state. Electrical feedback
is provided via a positively-driven, safety-rated DPST (DoublePole Single-Throw) switch with both normally open (NO) and
normally closed (NC) contacts. The DPST switch is actuated
whenever the valve is not in the normal home position.
An optional visual pressure indicator (988A30) or pressure
switch kit (608A86) can be installed into the 1/8 NPT pressure
verifi cation port (PV) for verifi cation of pressure release.
FEATURES:
• Pressure controlled and solenoid pilot controlled versions.
• Poppet construction for near zero leakage & high dirt tolerance.
• Directly operated safety-rated force-guided positive-break
status switch (DPST).
• Holds a vertical load in the event of loss of air pressure
(and electrical power with solenoid pilot operated models).
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Sensing Valves Redundant PO Check
Model Numbers* Port Size C
Solenoid Pilot Controlled Models (CNOMO Style)
1, 2 1 - 2 A B C lb (kg)
v
Dimensions inches (mm) Weight
SV27NC555408CSAA1A** 1/2 3.8 8.3 (211) 13.2 (335) 3.3 (84) 10.0 (4.5)
SV27NC555508CSAA1A** 3/4 5.6 8.3 (211) 13.2 (335) 3.3 (84) 10.0 (4.5)
SV27NC555608CSAA1A** 1 8 8.3 (211) 13.2 (335) 3.3 (84) 10.0 (4.5)
Pressure Controlled Models
SV27NC555405ASAA 1/2 3.8 8.3 (211) 8.5 (214) 3.3 (84) 9.0 (4.1)
SV27NC555505ASAA 3/4 5.6 8.3 (211) 8.5 (214) 3.3 (84) 9.0 (4.1)
SV27NC555605ASAA 1 8 8.3 (211) 8.5 (214) 3.3 (84) 9.0 (4.1)
*NPT port threads. For BSPP threads, replace “N” in the model number with a “D”, e.g. SV27DC555408CSAA1A.
** “1A”=120 volts 60 Hz solenoids. For 24 volts DC change “1A” to “1D”.
Solenoid Pilot Controlled Model (CNOMO Style)
Port X-1
(1/8 external
4X O 0.26 (6.7)
B
Port PV
(pressure
Por t 2
(outlet)
verification)
pilot supply)
5-pin M12
connector
Por t 1
(inlet)
1/4 Signal port
B
Pressure Controlled Model
4X O 0.26 (6.7)
Port PV
Por t 2
(pressure
(outlet)
verification)
A
5-pin M12
connector
Por t 1
(inlet)
1/4 Signal port
C
A
Solenoid Pilot Controlled Models (Pacer Style)
Model Numbers* Port Size C
1, 2 1 - 2 A B C lb (kg)
C
v
Dimensions inches (mm) Weight
SV27NC557608CSAA1A** 1 12 10.5 (267) 18.1 (459) 3.9 (99) 25.0 (11.3)
SV27NC557708CSAA1A** 1-1/4 19 10.5 (267) 18.1 (459) 3.9 (99) 25.0 (11.3)
SV27NC557808CSAA1A** 1-1/2 22 10.5 (267) 18.1 (459) 3.9 (99) 25.0 (11.3)
Pressure Controlled Models
SV27NC557605ASAA 1 12 10.5 (267) 11.7 (296) 3.5 (88) 22.0 (10.0)
SV27NC557705ASAA 1-1/4 19 10.5 (267) 11.7 (296) 3.5 (88) 22.0 (10.0)
SV27NC557805ASAA 1-1/2 22 10.5 (267) 11.7 (296) 3.5 (88) 22.0 (10.0)
*NPT port threads. For BSPP threads, replace “N” in the model number with a “D”, e.g. SV27DC557608CSAA1A.
** “1A”=120 volts 60 Hz solenoids. For 24 volts DC change “1A” to “1D”.
Solenoid Pilot Controlled Model (Pacer Style)
3-pin
Por t Y-3
(pilot exhaust)
4X O 0.53 (13.5)
B
Por t 2
(outlet)
Mini
connector
Port X-1
(1/8 external
pilot supply)
5-pin M12
connector
Por t 1
(inlet)
1/4 Signal port
B
Pressure Controlled Model
4X O 0.53 (13.5)
Por t 2
(outlet)
5-pin M12
connector
Por t 1
(inlet)
1/4 Signal port
A
Port PV
(pressure
verification)
Port PV
(pressure
verification)
C
A
Port X-1
(1/8 external
pilot supply)
3-pin
Mini
connector
C
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