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NOTICE

The supplied plastic blanking plugs are intended exclusively for protection against
contamination during transport and handling. During operation, these should be
replaced by cable connectors and/or blanking plugs approved for use in explosion
protection areas.
1. Loosen the housing screws [3] on the housing cover [2].
2. Screw the cable connector into the cable entry [8]. Insert the electrical con-

necting cable through the cable connector to the terminal strip [6].

3. Wire the connections. Maximum tightening torque of the screws: 0.4 Nm 

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 9

Terminal plan

4. Connect the earth terminal [7] with low impedance (short cable with large

cross section) to the earth terminal.

5. Place the housing cover in position and tighten the housing screws.

Make sure that the seal is positioned correctly.

9

Terminal plan

SRBE-Cxx-YR90-MW-22A-1W-…/SRBE-Cxx-YR90-R-2A-1W-…

Fig. 2: Two SPDT micro-switches, mechanical or magnetic

SRBE-Cxx-YR90-N-20N-ZC-…/SRBE-Cxx-YR90-N-1-ZU-…

Fig. 3: Two-wire proximity switches, inductive

SRBE-Cxx-YR90-N-1-P-…/SRBE-Cxx-YR90-N-1-N-…

Fig. 4: Three-wire proximity switches, inductive

SRBE-Cxx-YR90-MW-22A-2W-…

Fig. 5: Four SPDT micro-switches, mechanical

10

Switching point adjustment

The switching points are preset 

è

 5 Product overview

Fig. 6: Switching point adjustment

1. Close the process valve.

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Position indicator: ‘closed’.

2. Loosen the housing screws on the housing cover and remove the housing

cover.

3. Lift the red cam against the spring and turn until the lower proximity switch

switches.

4. Release the red cam.

Ä

The spring presses the red cam into the ring gear.

Ä

The switching point for ‘closed’ is set.

5. Open the process valve.

Ä

Position indicator: ‘open’.

6. Press down the green cam against the spring and turn until the upper prox-

imity switch switches.

7. Release the green cam.

Ä

The spring presses the green cam into the ring gear.

Ä

The switching point for ‘open’ is set.

8. Place the housing cover in position and tighten the housing screws.

11

Maintenance and care

The device is maintenance-free.

Repairs are not possible.

Avoid contact with aggressive substances.

Protect surfaces from excessive heat.

12

Fault clearance

Fault description

Cause

Remedy

Incorrect or unexpected
signal

Wire break

Replace cable

Position of the switching points incorrect

Set switching points

Proximity switch defective

Replace limit switch box

Tab. 2

13

Technical data

SRBE-...-C1

Certificates, declaration of conformity

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  www.festo.com/sp

Technical data, general
Mounting position

Any

Degree of protection

IP67, Type 4X

Cable entry

2 x 1/2 NPT

Angular detection setting range

[°]

0 … 90

Nominal cross section of conductor
that can be connected

[mm²]

0.25 … 2.5

Ambient conditions
Ex ambient temperature

[°C]

–20 … +60

Continuous shock resistance in
accordance with DIN/IEC 68 Part
2-82

± 15g at 6 ms duration;
1000 shocks per direction

Vibration resistance in accordance
with DIN/IEC 68 Part 2-6

0.35 mm path at 0 … 60 Hz;
5 g acceleration at 0 … 150 Hz

Technical data, electrical
Operating voltage range AC
SRBE-CA3-YR90-MW-22A-1W-…
SRBE-CA3-YR90-MW-22A-2W-…

[V]

0 … 250

SRBE-CA3-YR90-R-2A-1W-…

[V]

0 … 240, taking into account a maximum permis-
sible power P 100 W

Max. output current AC
SRBE-CA3-YR90-MW-22A-1W-…
SRBE-CA3-YR90-MW-22A-2W-…

[A]

3 (250 VAC)

SRBE-CA3-YR90-R-2A-1W-…

[A]

0.416 (240 VAC);
3, taking into account a maximum permissible
power P 100 W

Operating voltage range DC
SRBE-CA3-YR90-MW-22A-1W-...
SRBE-CA3-YR90-MW-22A-2W-...

[V]

0 … 30

SRBE-CA3-YR90-N-20N-ZC-

[V]

8.2

SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...

[V]

10 … 30

SRBE-CA3-YR90-N-1-ZU-

[V]

5 … 60

SRBE-CA3-YR90-R-2A-1W-...

[V]

0 … 30, taking into account a maximum permis-
sible power P 100 W

Max. output current DC
SRBE-CA3-YR90-MW-22A-1W-...
SRBE-CA3-YR90 -MW-22A-2W-...

[A]

6

SRBE-CA3-YR90-N-20N-ZC-...

[mA]

3

SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...

[mA]

100

SRBE-CA3-YR90-N-1-ZU-...

[mA]

4 … 100

SRBE-CA3-YR90-R-2A-1W-...

[A]

3, taking into account a maximum permissible
power P 100 W

Voltage drop
SRBE-CA3-YR90-N-1-P-…
SRBE-CA3-YR90-N-1-N-…

[V]

£

 3

SRBE-CA3-YR90-N-1-ZU-…

[V]

£

 5

No-load supply current
SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...

[mA]

£

 15

Residual current
SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...

[mA]

0 … 0.5; typically 0.1 mA at 25°C

SRBE-CA3-YR90-N-1-ZU-...

[mA]

0 … 1, typical 0.7 mA

Reverse polarity protection
SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...
SRBE-CA3-YR90-N-1-ZU-...

For all electrical connections

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