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Relays with Forcibly Guided Contacts
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.
Ordering Information
Relays with Forcibly Guided Contacts
Type Sealing 4 poles Standard Flux-tight 6 poles Poles Contacts 3PST-NO, SPST-NC DPST-NO, DPST-NC 5PST-NO, SPST-NC 4PST-NO, DPST-NC 3PST-NO, 3PST-NC Rated voltage Model G7SA-3A1B G7SA-2A2B G7SA-5A1B G7SA-4A2B G7SA-3A3B
24 VDC
Sockets
Type No Track-mounting Track mounting and screw mounting possible Yes Back-mounting PCB terminals No LED indicator Poles 4 poles 6 poles 4 poles 6 poles 4 poles 6 poles Rated voltage --24 VDC --Model P7SA-10F P7SA-14F P7SA-10F-ND P7SA-14F-ND P7SA-10P P7SA-14P
Model Number Legend
G7SA-#A#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
D-76
Safety Sensors / Components
Specifications
Ratings
Coil
Rated voltage 24 VDC Rated current Coil resistance Must-operate voltage 75% max. (V) Must-release voltage 10% min. (V) Max. voltage 110% (V) Power consumption 4 poles: Approx. 360 mW 6 poles: Approx. 500 mW
4 poles: 15 mA 4 poles: 1,600 W 6 poles: 20.8 mA 6 poles: 1,152 W
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23C with tolerances of 15%. 2. Performance characteristics are based on a coil temperature of 23C. 3. The value given for the maximum voltage is for voltages applied instantaneously to the Relay coil (at an ambient temperature of 23C) and not continuously.
Contacts
Load Rated load Rated carry current Max. switching voltage Max. switching current Max. switching capacity (reference value) Resistive load (cos f =1) 6 A at 250 VAC, 6 A at 30 VDC 6A 250 VAC, 125 VDC 6A 1,500 VA, 180 W
G7SA
D-77
G7SA
Characteristics
Sockets
Model P7SA-14# Continuous current 6 A (see note 1) Dielectric strength 2,500 VAC for 1 min. between poles Insulation resistance 100 MW min. (see note 2)
Note: 1. If the P7SA-1#F is used between 55 and 85C, reduce the continuous current (from 6 A) by 0.1 A for every degree. 2. Measurement conditions: Measurement of the same points as for the dielectric strength at 500 VDC. 3. When using the P7SA-1#F-ND at 24 VDC, use at an ambient operating temperature from -25 to 55C.
Relays with Forcibly Guided Contacts
Contact resistance Operating time (see note 2) Response time (see note 2) Release time (see note 2) Maximum operating frequency Insulation resistance Mechanical Rated load 100 mW max. (The contact resistance was measured with 1 A at 5 VDC using the voltage-drop method.) 20 ms max. 10 ms max. (The response time is the time it takes for the normally open contacts to open after the coil voltage is turned OFF.) 20 ms max. 36,000 operations/hr 1,800 operations/hr 100 MW min. (at 500 VDC) (The insulation resistance was measured with a 500-VDC megger at the same places that the dielectric strength was measured.) Between coil contacts/different poles: 4,000 VAC, 50/60 Hz for 1 min (2,500 VAC between poles 3-4 in 4-pole Relays or poles 3-5, 4-6, and 5-6 in 6-pole Relays.) Between contacts of same polarity: 1,500 VAC, 50/60 Hz for 1 min 10 to 55 Hz, 1.5-mm double amplitude 1,000 m/s2 100 m/s2 10,000,000 operations min. (at approx. 36,000 operations/hr) 100,000 operations min. (at the rated load and approx. 1,800 operations/hr) 5 VDC, 1 mA Operating:-40C to 85C (with no icing or condensation) Storage:-40C to 85C (with no icing or condensation) Operating:35% to 85% Storage:35% to 85% 4 poles: Approx. 22 g 6 poles: Approx. 25 g EN61810-1 (IEC61810-1), EN50205, UL508, CSA22.2 No. 14
Dielectric strength (see notes 3, 4) Vibration resistance Destruction Malfunction Mechanical Durability Electrical Min. permissible load (see note 5) (reference value) Shock resistance Ambient temperature (see note 6) Ambient humidity Weight Approved standards
Note: 1. The values listed above are initial values. 2. These times were measured at the rated voltage and an ambient temperature of 23C. Contact bounce time is not included. 3. Pole 3 refers to terminals 31-32 or 33-34, pole 4 refers to terminals 43-44, pole 5 refers to terminals 53-54, and pole 6 refers to terminals 63-64. 4. When using a P7SA Socket, the dielectric strength between coil contacts/different poles is 2,500 VAC, 50/60 Hz for 1 min. 5. Min. permissible load is for a switching frequency of 300 operations/min. 6. When operating at a temperature between 70C and 85C, reduce the rated carry current (6 A at 70C or less) by 0.1 A for each degree above 70C.
D-78
Safety Sensors / Components
Dimensions
Note: All units are in millimeters unless otherwise indicated. The diagrams are drawn in perspective.
Relays with Forcibly Guided Contacts
G7SA-3A1B G7SA-2A2B
13 max. 40 max.
Terminal Arrangement/ Internal Connection Diagram (Bottom View) G7SA-3A1B
Printed Circuit Board Design Diagram (Bottom View)
(0.1 tolerance)
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.
G7SA-5A1B G7SA-4A2B G7SA-3A3B
Terminal Arrangement/ Internal Connection Diagram (Bottom View) G7SA-5A1B
Printed Circuit Board Design Diagram (Bottom View)
(0.1 tolerance)
50 max.
13 max.
Fourteen, 1.4 dia.
24 max. 0.5
G7SA-4A2B
0.5 1
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.
G7SA
D-79
G7SA
Sockets
Track-mounting Socket
P7SA-10F, P7SA-10F-ND
Terminal Installation/Internal Connection Diagram (Top View) G7SA-3A1B Mounted G7SA-2A2B Mounted
22.5 max. Ten, M3 9 max.
60.5 max.
Mounting Hole Placement (Top View)
Two, 4 dia. or M3.5 72 max. LED indicator
* 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.
9 max. 4 dia. Note: The socket is shown with the finger cover removed. 6
Note: Only the -ND Sockets have LED indicators.
Track-mounting Socket
P7SA-14F, P7SA-14F-ND
Terminal Arrangement/Internal Connection Diagram (Top View) G7SA-5A1B Mounted G7SA-4A2B Mounted G7SA-3A3B Mounted
30 max. 9 max.
Fourteen, M3
60.5 max.
Mounting Hole Placement Diagram (Top View)
Two, 4 dia. or M3.5 72 max. LED indicator
* 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.
9 max. 4 dia. Note: The socket is shown with the finger cover removed. 6
Note: Only the -ND Sockets have LED indicators.
D-80
Safety Sensors / Components
P7SA-10P Back-mounting Socket (for PCB)
50 max. 15 max.
Terminal Arrangement/Internal Connection Diagram (Bottom View) G7SA-3A1B Mounted
Mounting Hole Placement (Bottom View)
(0.1 tolerance)
41.5 max.
Three, 3.2 dia. (for M3 tapping screws)
G7SA-2A2B Mounted
Three, 2.6 dia. (for M3 tapping screws)
Ten, 1.1 dia.
Note: Terminals 23-24, 33-34, and 43-44 are normally open. Terminals 11-12 and 21-22 are normally closed.
P7SA-14P Back-mounting Socket (for PCB)
G7SA
60 max. 15 max.
Terminal Arrangement/Internal Connection Diagram (Bottom View) G7SA-5A1B Mounted
Mounting Hole Placement (Bottom View)
(0.1 tolerance)
41.5 max.
Fourteen, 1.1 dia.
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.
G7SA
D-81
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.
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.) 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
S1 S1 21 11
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/10F-ND/ 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.
Cleaning
The G7SA is not of enclosed construction. Therefore, do not wash the G7SA with water or detergent.
Fig 2
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.
22
12
S2
K1 S2 A1 A2 T11 T12 +D B1 Y1 X1 13
K1
K1
K1 K2
K1 K2
Power source
F1
K3 K1
K3 K2
K3
K1
K2
K3
PE T21
T22
14
Power source
D-82
Safety Sensors / Components

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