Festo SRBE C1 Series User manual

SRBE-...-C1
limit switch box
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
[phone]
www.festo.com
Operating instructions
8176802
2022-06b
[8176804]
Translation of the original instructions
© 2022 all rights reserved to Festo SE & Co. KG
1Identification EX
Identification Type
Class I, Division 1, Groups C, D
Class II, Division 1, Groups E, F, G
Class III; Temperature Code T4A
Ex d IIB T5 Gb; Ex tb IIIC T108°C Db
Class I, Zone 1, AEx d IIB T5 Gb
Class II, Zone 21, AEx tb IIIC T108°C Db
SRBE-CA3-YR90-MW-22A-1W-... – only Div.1
SRBE-CA3-YR90-MW-22A-2W-... – only Div.1
SRBE-CA3-YR90-N-20N-ZC-... – Div.1 and 2
SRBE-CA3-YR90-N-1-P-... – Div.1 and 2
SRBE-CA3-YR90-N-1-N-... – Div.1 and 2
SRBE-CA3-YR90-N-1-ZU-... – Div.1 and 2
SRBE-CA3-YR90-R-2A-1W-... – Div.1 and 2
Class I, Division 2, Groups A, B, C and D
Class II, Division 1, Groups E, F and G
Class III; Temperature Code T4A
Ex nA IIC T5 Gc; Ex tb IIIC T108°C Db
Class I, Zone 2 AEx nA IIC T5 Gc
Class II, Zone 21, AEx tb IIIC T108°C Db
Certificate: CSA-EX-2885024; Ex protection - CSA Canada and USA
Tab. 1: Identification EX
2 Applicable documents
NOTICE
Technical data for the product can have different values in other documents. For
operation in an explosive atmosphere, the technical data in this document always
have priority.
All available documents for the product è www.festo.com/sp.
3 Safety
3.1 Safety instructions
The device can be used under the stated operating conditions in potentially
explosive gas atmospheres, and in potentially explosive dust atmospheres.
3.2 Intended use
The intended use of the product is to record and display the end positions and
intermediate positions of pneumatic drives.
3.3 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can
evaluate the work and detect dangers. The qualified personnel have skills and
experience in dealing with electrical (open-loop) control technology.
3.4 CSA certification
Fitting and commissioning is to be carried out by qualified personnel only in
accordance with the operating instructions.
The personnel must have several years of training and experience in installing and
commissioning electrical and pneumatic industrial control systems.
•Please observe the applicable safety requirements and standards.
Conversion or extension of the product with modules, for which the Recognized
Component Mark of CSA does not apply, will lead to loss of the CSA certification.
• Contact Festo if you require information on CSA-certified modules.
Only when connected in potentially explosive areas
Wiring to or from this device, which enters or leaves the system enclosure, must
utilize wiring methods suitable for Class I, Division 2 (or Division 1) Hazardous
Locations, as appropriate for the installation.
Enclosure Environmental ratings are achieved when conduit entries are torqued
to at least 90.4 Nm (800) lbs/inch) and fasteners (Class A2-50) to 40 Nm (354 lbs/
inch) not-lubricated conditions.
Use field wiring suitable for 95 °C.
Class I. Division 1. Groups C and D
–Open circuit before removing cover.
–Keep cover tight while circuits are alive.
–Seal required within 18 inches.
Class I. Division 2. Group A. B. C and D
WARNING
EXPLOSION HAZARD
Substitution of components may impair suitability for Class I, Division 2.
WARNING
EXPLOSION HAZARD
Do not connect while circuit is alive unless area is known to be nonhazardous.
4 Additional information
–Contact the regional Festo contact if you have technical problems
è www.festo.com.
–Accessories and spare parts è www.festo.com/catalogue.
5Product overview
1
2
3
4
5
6
7
8
9
Fig.1
1
Position indicator
2
Housing cover
3
Housing screws
4
Shaft with cam
5
Proximity switch
6
Terminal strip
7
Protective earthing (PE) on the inside
and outside of the housing wall
8
Cable entry M20x1.5 or 1/2 NPT
9
Mounting adapter with M5x8 retaining
screws
Default settings on delivery:
–Position indicator “closed”
–Switching point for “open” 90° anti-clockwise
6Function
The limit switch box is used for the detection and electrical and optical feedback
of the end positions of a drive. The limit switch box is suitable for operation
with semi-rotary drives with a mechanical interface in accordance with VDI/VDE
Guideline 3845.
7 Installation
WARNING
Carry out the commissioning, service and inspection outside of the explosive
atmosphere. Disconnect the power supply before this work and secure against
reconnection.
1. Close the process valve.
2. Place the limit switch box with the mounting adapter on the drive and align it.
–Avoid axial load of the drive shaft.
3. Fasten the mounting adapter to the drive.
–Lock the retaining screws. Tightening torque: 6 Nm ± 10%
Mounting adapter
Observe the tightening torque when replacing the limit switch attachment.
–Tightening torque between mounting adapter and limit switch box: 10 Nm
± 10%
8Electrical connection
WARNING
Before switching on the electrical circuit in potentially explosive atmospheres:
• Mount the cover securely on the housing.
• Connect with potential equalisation.
WARNING
Use cable connectors of type of (ignition) protection Ex-d and a degree of protec-
tion of at least IP67. Seal unused cable entries with blanking plugs.
NOTICE
Thread of the cable guide depends on the product variant: M20x1.5 or 1/2 NPT
Cable fittings must be appropriate for the corresponding thread type. Cable con-
nector threads must not protrude into the interior of the housing.

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 è 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.
9Terminal 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.
ÄPosition 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.
ÄThe spring presses the red cam into the ring gear.
ÄThe switching point for ‘closed’ is set.
5. Open the process valve.
ÄPosition 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.
ÄThe spring presses the green cam into the ring gear.
ÄThe 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 è 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

SRBE-...-C1
Short circuit current rating
SRBE-CA3-YR90-N-1-P-...
SRBE-CA3-YR90-N-1-N-...
Clocked
Materials
Housing painted die-cast aluminium
Shaft, screw, mounting adapter High-alloy stainless steel
Seal NBR
Optical position indicator PC
Tab. 3: Technical data