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Intrinsic Safety Solenoid Valves |
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Intrinsic safety valves can be used for applications that require similar explosion class/ignition degree to d2G4 or Exd II BT5 type (explosion-proof enclosure construction).
Without need for expensive connection tools and complex installation work that are inevitable for explosion-proof enclosure types, the intrinsic safety valves achieve highly reliable explosion-proof performance.
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| Explosion barrier
SAF3-5 , MTL728+ |
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Intrinsic safety explosion barrier is an explosion-proof device with single channel, shunt-diode DC circuit that enables interactive electric signaling without short circuit while controlling energy transmission in order to prevent ignition in explosive atmosphere.
1.Applicable to Zone 0.
2.When serially connected to a transmission circuit, the barrier protects
the circuit and components in hazardous area from being affected by
a serious accident in the non-hazardous area.
3.Despite in the hazardous location, conventional wiring is available.
4.Intrinsical proof of operational signal is figured out easily and at lower
cost.
5.As SAF3-5 safety barrier has protection circuit, it will be not broken
if you wired in the wrong polarity.
6.SAF3-5 safety barrier employ crimping terminal wiring method.
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| Model
code |
ＳＡＦ3-5 |
ＭＴＬ728+ |
| Explosion-proof
construction |
Intrinsic
safety construction（ExiaⅡB) |
Intrinsic
safety construction（i2G4） |
| Rated
voltage |
ＤＣ24Ｖ±5% |
- |
| Max.
working voltage |
- |
ＤＣ25.5Ｖ |
| Max.
allowable voltage |
- |
ＤＣ26.6Ｖ |
| Safety
retention voltage |
ＡＣ/ＤＣ 250Ｖ |
| Rating
of a fuse |
50ｍＡ |
| Ambient
temp. |
-20～60℃ |
-10～60℃ |
| Basic
circuit figure |
 |
| Operating
condition |
1.Place
the valve in non-hazardous area.
2.
Parts and connections cannot be changed.
3. Use
with specified solenoid valves.
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4. Allowable
inductance for external connection: 10mH / Capacitance: 0.5 μF
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4. Allowable
inductance for external connection: 1mH / Capacitance: 0.05 μF
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| Explosion barrier
SAF100-5 |
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Intrinsic safety explosion barrier is an explosion-proof device with single channel,
Zener-diode DC circuit that enables interactive electric signaling without short circuit while controlling energy transmission in order to prevent ignition in explosive atmosphere.
1.Applicable to Zone 0.
2.A-class ground is not necessary since the input and output are insulated
each other.
3.When serially connected to a transmission circuit, the barrier protects
the circuit and components in hazardous area from being affected by
a serious accident in the non-hazardous area.
4.Despite in the hazardous location, conventional wiring is available.
5.Intrinsical proof of operational signal is figured out easily and at lower
cost.
6.SAF100-5 safety barrier employ crimping terminal wiring method.
7.As
SAF100-5 safety barrier has protection circuit, it will be not broken
if you wired in the wrong polarity.
8.LED indicates the condition of the input and output.
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| Model
code |
ＳＡＦ100-5 |
| Explosion-proof
construction |
Intrinsic
safety construction（EｘｉａⅡC) |
| Rated
voltage |
ＤＣ24Ｖ±10% |
| Maximum voltage of a intrinsic safety circuit |
ＤＣ29.4Ｖ |
| Max.
allowable voltage |
ＤＣ25.95Ｖ |
| Maximum current of a intrinsic safety circuit |
93.8ｍＡ |
| Electric power of a intrinsic safety circuit |
0.689W |
| Ambient
temp. |
-20～50℃ |
| Basic
circuit figure |
Does not need A-class ground.
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| Operating
condition |
1.Place
the valve in non-hazardous area.
2.Perform single grounding using type A ground.
3.
Parts and connections cannot be changed.
4. Use
with specified solenoid valves.
5. Allowable
inductance for external
connection:
2mH / Capacitance: 0.05 μF
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| 454 series 5-port solenoid valves
(spool valve) |
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Return |
Hold |
| Kind of barrier to combine |
ｉ２Ｇ４ |
MTL728+ |
454S202C-Ｙｉ |
454S203C-Ｙｉ |
454S403C-Ｙｉ |
454S404C-Ｙｉ |
454D202C-Ｙｉ |
454D203C-Ｙｉ |
454D403C-Ｙｉ |
454D404C-Ｙｉ |
| EｘｉａⅡBT5 |
SAF3-5 |
454S202M-Ｙｉ |
454S203M-Ｙｉ |
454S403M-Ｙｉ |
454S404M-Ｙｉ |
454D202M-Ｙｉ |
454D203M-Ｙｉ |
454D403M-Ｙｉ |
454D404M-Ｙｉ |
| In the case of other explosion-proof barriers and combination
*1 |
| Structure of the main valve |
Pilot spool type
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| Port size |
Rc1/4 |
Rc3/8 |
Rc1/2 |
Rc1/4 |
Rc3/8 |
Rc1/2 |
| Effective area of valve |
22mm2 |
40mm2 |
22mm2 |
40mm2 |
| Working pressure |
0.2～0.7MPa |
| Ambient temp. |
-5～50℃ |
| Explosion-proof standard |
Intrinsic safety construction |
| Operating condition |
1. Use with specified safety barrier.
For i2G4 explosion-proof valves, use them with MTL728+ safety barrier.
For Exia II BT5 explosion-proof valves, use them with the safety barrier
SAF3-5 or that meets the
conditions described below (note *1).
2. Parts and connections cannot be changed.
3. Use 1 explosion-proof barrier for each solenoid valve.
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| 414/416 series 5-port solenoid valves
(Spool valve / Ceramic slide valve) |
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Return |
| Kind of barrier to combine |
ｉ２Ｇ４ |
MTL728+ |
414S302C-Ｙｉ |
414S303C-Ｙｉ |
414S603C-Ｙｉ |
414S604C-Ｙｉ |
416S302C-Ｙｉ |
416S303C-Ｙｉ |
416S603C-Ｙｉ |
416S604C-Ｙｉ |
| EｘｉａⅡBT5 |
SAF3-5 |
414S302M-Ｙｉ |
414S303M-Ｙｉ |
414S603M-Ｙｉ |
414S604M-Ｙｉ |
416S302M-Ｙｉ |
416S303M-Ｙｉ |
416S603M-Ｙｉ |
416S604M-Ｙｉ |
| In the case of other explosion-proof barriers and combination
*1 |
| Structure of the main valve |
Pilot spool type |
Pilot ceramic slide type |
| Port size |
Rc1/4 |
Rc3/8 |
Rc1/2 |
Rc1/4 |
Rc3/8 |
Rc1/2 |
| Effective area of valve |
25mm2 |
30mm2 |
51mm2 |
60mm2 |
24mm2 |
28mm2 |
51mm2 |
60mm2 |
| Working pressure |
0.2～0.7MPa |
0.12～0.7MPa |
| Ambient temp. |
-5～50℃ |
-10～60℃ |
| Explosion-proof standard |
Intrinsic safety construction |
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Operating condition
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1. Use with specified safety barrier.
For i2G4 explosion-proof valves, use them with MTL728+ safety barrier.
For Exia II BT5 explosion-proof valves, use them with the safety barrier
SAF3-5 or that meets the
conditions described below (note *1).
2. Parts and connections cannot be changed.
3. Use 1 explosion-proof barrier for each solenoid valve.
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| 414/416 series 5-port solenoid valves (Terminal block ZA)
(Spool valve/Ceramic slide valve) |
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Return |
| Kind
of barrier to combine |
EｘｉａⅡBT5 |
SAF3-5 |
414S302M-ＹAｉ |
414S303M-ＹAｉ |
414S603M-ＹAｉ |
414S604M-ＹAｉ |
416S302M-ＹAｉ |
416S303M-ＹAｉ |
416S603M-ＹAｉ |
416S604M-ＹAｉ |
| In the case of other explosion-proof barriers and combination
*1 |
| Structure of the main valve |
Pilot spool type |
Pilot ceramic slide type |
| Port size |
Rc1/4 |
Rc3/8 |
Rc1/2 |
Rc1/4 |
Rc3/8 |
Rc1/2 |
| Effective area of valve |
25mm2 |
30mm2 |
51mm2 |
60mm2 |
24mm2 |
28mm2 |
51mm2 |
60mm2 |
| Working pressure |
0.2～0.7MPa |
0.12～0.7MPa |
| Ambient temp. |
-5～50℃ |
-10～60℃ |
| Explosion-proof standard |
Intrinsic safety construction |
| Operating condition |
1. Use with specified safety barrier.
For Exia II BT5 explosion-proof valves, use them with the safety barrier
SAF3-5 or that meets the
conditions described below (note *1).
2. Parts and connections cannot be changed.
3. Use 1 explosion-proof barrier for each solenoid valve.
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note ＊1
In the case of other barriers and combination
Konan 454, 414, 416 series intrinsic safety solenoid valves have passed equipment qualification tests for intrinsic safety solenoid valve.
The valves can be used in combination with the safety barrier that meets the following conditions. (The valves can be used with insulation barrier that does not need type A ground.)
The barrier used in combination with the valves should be the one that has passed equipment qualification tests for a barrier and that meets the following conditions. |
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| Safety retention voltage |
Maximum voltage of a intrinsic safety circuit |
Less than 29.4V |
| Maximum current of a intrinsic safety circuit |
Less than 93.8mA |
| Electric power of a intrinsic safety circuit |
Less than 0.689W |
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Performance classification / Group
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Performance classification |
ia |
| Group |
ⅡB or ⅡC |
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Allowable inductance (Lo) and capacitance (Co) for an intrinsic safety circuit and relationship between inductance (Lo) and capacitance (Cw) for external connections to the intrinsic safety circuit
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Allowable inductance of a intrinsic safety circuit：Lo≧Li+Lw（mH）
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Allowable capacitance of a intrinsic safety circuit：Co≧Ci+Cw（μF）
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