General Purpose Relay – G7SA Slim Relays with Forcibly Guided Standards

General Purpose Relay – G7SA Slim Relays with Forcibly Guided Standards
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
Page 489
General Purpose Relay – G7SA
Slim Relays with Forcibly Guided
Contacts Conforming to EN
Standards
■ EN50205 Class A, approved by VDE.
■ Ideal for use in safety circuits in production
machinery.
■ Four-pole and six-pole Relays are available.
■ The Relay’s terminal arrangement simplifies
PWB pattern design.
■ Reinforced insulation between inputs and
outputs. Reinforced insulation between some
poles.
■ UL, CSA approval.
■ CE marking.
Ordering Information
General Purpose Relays
Relays with Forcibly Guided Contacts
Sockets
Model Number Legend
[email protected]@B
1
2
1. NO Contact Poles
2:
DPST-NO
3:
3PST-NO
4:
4PST-NO
5:
5PST-NO
2. NC Contact Poles
1:
SPST-NC
2:
DPST-NC
3:
3PST-NC
489
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
General Purpose Relay – G7SA
Ratings
■
Coil
■
Contacts
Characteristics
■
Sockets
■
Relays with Forcibly Guided Contacts
490
Page 490
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
Page 491
General Purpose Relay – G7SA
Dimensions
Note: All units are in millimetres unless otherwise indicated.
■
Relays with Forcibly Guided Contacts
Terminal Arrangement/
Internal Connection Diagram
(Bottom View)
G7SA-3A1B
G7SA-2A2B
Printed Circuit Board
Design Diagram
(Bottom View)
(±0.1 tolerance)
G7SA-3A1B
13 max.
Ten, 1.4 dia.
24 max.
0.5
0.5
1
3.5
G7SA-2A2B
Note: Terminals 23-24, 33-34, and 43-44
are normally open. Terminals 11-12
and 21-22 are normally closed.
Terminal Arrangement/
Internal Connection Diagram
(Bottom View)
G7SA-5A1B
G7SA-4A2B
G7SA-3A3B
Printed Circuit Board
Design Diagram
(Bottom View)
(±0.1 tolerance)
G7SA-5A1B
13 max.
50 max.
Fourteen, 1.4 dia.
24 max.
0.5
0.5 1
G7SA-4A2B
3.5
G7SA-3A3B
Note: Terminals 23-24, 33-34, 53-54, and
63-64 are normally open. Terminals
11-12, 21-22, and 31-32 are
normally closed.
491
General Purpose Relays
40 max.
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
Page 492
General Purpose Relay – G7SA
■
Sockets
Terminal Installation/Internal Connection Diagram
(Top View)
Track-mounting Socket
P7SA-10F, P7SA-10F-ND
G7SA-3A1B
Mounted
22.5 max.
G7SA-2A2B
Mounted
60.5 max.
Ten, M3
9 max.
Mounting Hole Placement
(Top View)
Two, 4 dia. or M3.5
* This display circuit is
available only for
"-ND" models.
Note: Terminals 23-24,
33-34, and 43-44
are normally
open. Terminals
Diagram
11-12 and 21-22
are normally
closed.
72 max.
LED
indicator
9 max.
4 dia.
Note: The socket is shown with
the finger cover removed.
6
Note: Only the -ND Sockets have LED indicators.
Terminal Arrangement/Internal Connection Diagram
(Top View)
Track-mounting Socket
P7SA-14F, P7SA-14F-ND
G7SA-5A1B
Mounted
30 max.
Fourteen,
M3
G7SA-4A2B
Mounted
G7SA-3A3B
Mounted
60.5 max.
9 max.
Mounting Hole Placement Diagram
(Top View)
Two, 4 dia. or M3.5
72 max.
LED
indicator
9 max.
4 dia.
Note: The socket is shown with the
finger cover removed.
Note: Only the -ND Sockets have LED indicators.
492
6
* This display circuit is
available only for
"-ND" models.
Note: Terminals 23-24,
33-34, 43-44,
53-54, and 6364 are normally
open. Terminals
11-12, 21-22,
and 31-32 are
normally closed.
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
Page 493
General Purpose Relay – G7SA
■
P7SA-10P
Back-mounting
Socket
P7SA-10P
Back-mounting
Socket (for
PCB)
(for PCB)
50 max.
Terminal Arrangement/Internal
Connection Diagram
(Bottom View)
15 max.
Mounting Hole Placement
(Bottom View)
(±0.1 tolerance)
G7SA-3A1B
Mounted
Three, 3.2 dia.
(for M3 tapping screws)
41.5 max.
Ten, 1.1 dia.
G7SA-2A2B
Mounted
Three, 2.6 dia.
(for M3 tapping screws)
■
P7SA-14P
Back-mounting
Socket
P7SA-14P
Back-mounting
Socket (for
PCB) (for
PCB)
Terminal Arrangement/Internal
Connection Diagram
(Bottom View)
60 max.
15 max.
General Purpose Relays
Note: Terminals 23-24, 33-34, and 43-44
are normally open. Terminals 11-12
and 21-22 are normally closed.
Mounting Hole Placement
(Bottom View)
(±0.1 tolerance)
G7SA-5A1B
Mounted
Fourteen,
1.1 dia.
41.5 max.
Three, 3.2 dia.
(for M3 tapping
screws)
G7SA-4A2B
Mounted
Three, 2.6 dia.
(for M3 tapping screws)
G7SA-3A3B
Mounted
Note: Terminals 23-24, 33-34, 43-44,
53-54, and 63-64 are normally
open. Terminals 11-12, 21-22,
and 31-32 are normally closed.
493
Omron A5 Catalogue 2007 419-518
11/9/06
11:04 am
Page 494
General Purpose Relay – G7SA
Precautions
CAUTION
Do not touch the terminal area of the Relays or the
socket terminal area (charged area) while power is ON.
Electric shock will result
Relays with Forcibly Guided Contacts
A Relay with Forcibly Guided Contacts is a Relay with which a
safety category circuit can be configured.
Wiring
Use one of the following wires to connect to the P7SA-10F/10FND/14F/14F-ND.
Stranded wire: 0.75 to 1.5 mm2
Solid wire:
1.0 to 1.5 mm2
Tighten each screw of the P7SA-10F/10F-ND/14F/14F-ND to a
torque of 0.98 N·m securely.
Wire the terminals correctly with no mistakes in coil polarity,
otherwise the G7SA will not operate.
Claening
The G7SA is not of enclosed construction. Therefore, do not wash
the G7SA with water or detergent.
Forcibly Guided Contacts (from EN50205)
If an NO contact becomes welded, all NC contacts will maintain a
minimum distance of 0.5 mm when the coil is not energized.
Likewise if an NC contact becomes welded, all NO contacts will
maintain a minimum distance of 0.5 mm when the coil
is energized.
■
To configure the power control circuit to interrupt the power when
a contact weld or other malfunction occurs, and to prevent
restarting until the problem has been eliminated, add another
Relay with Forcibly Guided Contacts or similar Relay in
combination to provide redundancy and a self-monitoring
function to the circuit (as shown in Fig. 2).
The G9S/G9SA Safety Relay Unit, which combines Relays such
as the Relay with Forcibly Guided Contacts in order to provide the
above-described functions, is available for this purpose. By
connecting a contactor with appropriate input and output to the
Safety Relay Unit, the circuit can be equipped with redundancy
and a self-monitoring function.
Fig 1
Fig 2
S1
S1
21
11
22
12
S2
K1
S2
K1
K1
A1 A2 T11 T12
+ −
B1
Y1 X1
D
Correct Use
Relays with Forcibly Guided Contacts
While the Relay with Forcibly Guided Contacts has the previously
described forcibly guided contact structure, it is basically the
same as an ordinary relay in other respects. Rather than serving
to prevent malfunctions, the forcibly guided contact structure
enables another circuit to detect the condition following a contact
weld or other malfunction. Accordingly, when a contact weld
occurs in a Relay with Forcibly Guided Contacts, depending on
the circuit configuration, the power may not be interrupted,
leaving the Relay in a potentially dangerous condition (as shown
in Fig. 1.) .
CAT. No. J120-E2-02
494
Power source
F1
K3 K1
K1
PE T21
K3 K2
K2
T22
K3
13
K1
K1
K2
K2
K3
14
Power source
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