Datasheet

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General-purpose Relay LY A-31

Electromechanical

Relays

General-purpose Relay

A Miniature Power Relay

• Equipped with arc barrier.

• Dielectric strength: 2,000 V.

• Built-in diode models added to the LY Series.

• Single-pole and double-pole models are applicable to operating

coils with ratings of 100/110 VAC, 110/120 VAC, 200/220 VAC,

220/240 VAC, or 100/110 VDC).

• Three-pole and four-pole models are applicable to operating

coils with ratings of 100/110 VAC, 200/220 VAC, or 100/110

VDC).

Ordering Information

■ Open Relays

Note: 1. When ordering, add the rated coil voltage to the model number. Rated coil voltages are given in the coil ratings table.

2. Relays with #187 quick connect terminals are also available with SPDT and DPDT contact. Ask your OMRON representative for details.

3. SEV models are standard Relays excluding DPDT (bifurcated) models.

4. VDE- or LR- qualifying Relays must be specified when ordering.

Type Contact form

Standard SPDT LY1 LY1N LY1-0 LY1F

DPDT LY2 LY2N LY2-0 LY2F

DPDT (bifurcated) LY2Z LY2ZN LY2Z-0 LY2ZF

3PDT LY3 LY3N LY3-0 LY3F

4PDT LY4 LY4N LY4-0 LY4F

With built-in diode

(DC only)

SPDT LY1-D LY1N-D2 --- ---

DPDT LY2-D LY2N-D2 --- ---

DPDT (bifurcated) LY2Z-D LY2ZN-D2 --- ---

3PDT LY3-D --- --- ---

4PDT LY4-D LY4N-D2 --- ---

With built-in CR

(AC only)

SPDT --- --- --- ---

DPDT LY2-CR LY2N-CR --- ---

DPDT (bifurcated) LY2Z-CR LY2ZN-CR --- ---

Plug-in/solder

terminals

Plug-in/solder

terminals with LED

indicator

PCB terminal

Upper-mounting

Plug-in/solder

terminals

Rated coil volta

Example: LY2, 6 VAC

Summary of content (14 pages)

PAGE 1
Electromechanical Relays General-purpose Relay LY A Miniature Power Relay • Equipped with arc barrier. • Dielectric strength: 2,000 V. • Built-in diode models added to the LY Series. • Single-pole and double-pole models are applicable to operating coils with ratings of 100/110 VAC, 110/120 VAC, 200/220 VAC, 220/240 VAC, or 100/110 VDC). • Three-pole and four-pole models are applicable to operating coils with ratings of 100/110 VAC, 200/220 VAC, or 100/110 VDC).
PAGE 2
■ Accessories (Order Separately) Sockets Poles Front-connecting Socket Back-connecting Socket DIN track/screw terminals Plug-in/solder terminals Wrapping terminals PCB terminals 1 or 2 PTF08A-E, PTF08A PT08 PT08QN PT08-0 3 PTF11A PT11 PT11QN PT11-0 4 PTF14A-E, PTF14A PT14 PT14QN PT14-0 Note: 1. For PTF08-E and PTF14A-E, see “Track Mounted Socket.” 2. PTF@A (-E) Sockets have met UL and CSA standards: UL 508/CSA C22.2.
PAGE 3
Rated voltage Rated current 50 Hz AC DC Coil resistance 60 Hz Coil inductance (reference value) Arm. OFF Arm. ON 6V 310 mA 270 mA 6.7 Ω 0.03 H 0.05 H 12 V 159 mA 134 mA 24 Ω 0.12 H 0.21 H 24 V 80 mA 67 mA 100 Ω 0.44 H 0.79 H 50 V 38 mA 33 mA 410 Ω 2.24 H 3.87 H 100/110 V 14.1/16 mA 12.4/13.7 mA 2,300 Ω 10.5 H 18.5 H 200/220 V 9.0/10.0 mA 7.7/8.5 mA 8,650 Ω 34.8 H 59.5 H 6V 234 mA 25.7 Ω 0.11 H 0.21 H 12 V 112 mA 107 Ω 0.45 H 0.98 H 24 V 58.
PAGE 4
■ Contact Ratings Relay Single contact 1-pole Load Resistive load (cosφ = 1) Bifurcated contacts 2-, 3- or 4-pole Inductive load (cosφ=0.4, L/R=7 ms) 110 VAC 10 A 24 VDC 7 A Resistive load (cosφ = 1) 110 VAC 15 A 24 VDC 15 A Rated carry current 15 A 10 A 7A Max. switching voltage 250 VAC 125 VDC 250 VAC 125 VDC 250 VAC 125 VDC Max. switching current 15 A 10 A 7A Max. switching power 1,700 VA 360 W Failure rate (reference value)* 100 mA, 5 VDC 1,100 VA 240 W 110 VAC 7.
PAGE 5
Electromechanical Relays ■ Endurance Under Real Loads (reference only) LY1 Rated voltage 100 VAC Load type Conditions Operating frequency Electrical life AC motor 400 W, 100 VAC single-phase with 35-A in- ON for 10 s, OFF for 50 s rush current, 7-A current flow 50,000 operations AC lamp 300 W, 100 VAC with 51-A inrush current, ON for 5 s, OFF for 55 s 3-A current flow 100,000 operations 500 W, 100 VAC with 78-A inrush current, 5-A current flow 25,000 operations Capacitor (2,000 µF) 24 VDC wit
PAGE 6
■ Approved Standards UL 508 Recognitions (File No. 41643) No. of poles 1 Coil ratings 6 to 240 VAC 6 to 125 VDC 2 3 and 4 Contact ratings Operations 15 A, 30 VDC (Resistive) 15 A, 240 VAC (General use) TV-5, 120 VAC 1/2 HP, 120 VAC 15 A, 28 VDC (Resistive) 15 A, 120 VAC (Resistive) 12 A, 240 VAC (General use) 1/2 HP, 120 VAC 6 x 103 10 A, 30 VDC (Resistive) 10 A, 240 VAC (General use) 1/3 HP, 240 VAC 6 x 103 25 x 103 6 x 103 25 x 103 CSA 22.2 No. 14 Listings (File No. LR31928) No.
PAGE 7
Electromechanical Relays Engineering Data LY1 Maximum Switching Power Switching current (A) 10 5 AC (cosφ = 0.4) Life: 200,000 operations 1 0.5 DC L/R = 7 ms DC resistive load Endurance (x103 operations) AC resistive load 15 Endurance 0.1 10,000 5,000 110 VAC resistive load 24 VDC resistive load 1,000 500 24 VDC (L/R = 7ms) 100 10 100 500 1,000 0 2 4 6 Switching voltage (V) 110 VAC (cosφ = 0.
PAGE 8
LY2Z 10 AC resistive load 5 AC (cosφ = 0.4) Endurance Endurance (x103 operations) Switching current (A) Maximum Switching Power DC resistive load 1 0.5 DC L/R = 7 ms 24 VDC resistive load 10,000 110 VAC resistive load 5,000 110 VAC (cosφ = 0.4) 1,000 500 24 VDC (L/R = 7ms) 100 Life: 500,000 operations 0 10 50 100 0 500 1,000 Switching voltage (V) 2 4 6 8 10 Switching current (A) Dimensions Note: All units are in millimeters unless otherwise indicated.
PAGE 9
LY2Z LY2Z-D LY2ZN LY2ZN-D2 Electromechanical Relays LY2 LY2-D LY2N LY2N-D2 Terminal Arrangement/Internal Connections (Bottom View) LY2(Z)-D LY2(Z) 0.5 28 max. Eight, 3-dia. holes 5 3 36 max. 21.5 max. 6.4 LY2(Z)N DC Model LY2(Z)N-D2 AC Model Note: The DC models have polarity. LY3Z LY3N LY3-D 0.5 28 max. 5 36.5 max. 3 6.4 31.5 max. Eleven, 3-dia. holes Terminal Arrangement/Internal Connections (Bottom View) LY3 LY3-D LY3N DC Model AC Model Note: The DC models have polarity.
PAGE 10
LY4 LY4-D Terminal Arrangement/Internal Connections (Bottom View) LY4N LY4N-D2 LY4 LY4-D 0.5 28 max. 5 3 36 max. 41.5 max. Fourteen, 3-dia. holes 6.4 LY4N DC Model LY4N-D2 AC Model Note: The DC models have polarity. LY2-CR LY2Z-CR LY2N-CR LY2ZN-CR Terminal Arrangement/Internal Connections (Bottom View) LY2(Z)N-CR LY2(Z)-CR 0.5 Eight, 3-dia. holes 28 max. 5 3 53 max. CR Element 21.5 max. 6.4 C: 0.
PAGE 11
Electromechanical Relays Upper-mounting Relays LY1F LY2F Mounting Holes 22.5 max. 2 0.5 44 max. 29 38 max. 38±0.1 5 3 35.5 max. Eight, 2-dia. holes (see note) 6.4 Two, 3.5-dia. holes (or Two M3 holes) 3.5 Note: 1. Eight 3-dia. holes should apply to the LY2F model. LY3F 32 max. 3.5 2 0.5 28.5 max. 38±0.1 38 44 max. 5 3 36 max. Eleven, 3-dia. holes Two, 3.5-dia. holes (or two, M3 holes) 6.4 Mounting holes LY4F 41.5 max. 3.5 2 Two, 3.5 dia. holes (or two, M3 holes) 0.5 28 38 max.
PAGE 12
Mounting Height with Socket The following Socket heights should be maintained. Back-connecting Front-connecting LY 67 (84) 71 (see note) LY 40 (57) Note: 1. The PTF@A (-E) can be track-mounted or screw-mounted. 2. For the LY@-CR (CR circuit built-in type) model, this figure should be 88. PT@ PTF@A (-E) Sockets PTF11A PTF08A-E PTF14A-E PT14QN PT11QN PT08 PT08-0 PT11 PT08QN PT14 PT14-0 PT11-0 Mounting Plates for Back-connecting PYP-1 PTP-1-3 Two, 3.4-dia. holes 5.1 42 PTP-1 49 42±0.
PAGE 13
Electromechanical Relays ■ Hold-down Clips Hold-down clips are used to hold Relays to Sockets and prevent them from coming loose due to vibration or shock. Used with Socket PYC-A1 PYC-P Used with Socket mounting plate PYC-S For CR circuit built-in Relay Y92H-3 PYC-1 Precautions Refer to page A-72 for general precautions. ■ Connections Do not reverse polarity when connecting DC-operated Relays with built-in diodes or indicators.
PAGE 14
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. J002-E1-10 A-44 In the interest of product improvement, specifications are subject to change without notice.