compact smart relay, Zelio Logic SR2 SR3, 12 IO, 24V AC, clock, display
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Quick facts
| Availability | Confirmed on request |
| Category | Zelio Logic SR2/SR3 |
| Lifecycle | active |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
| Weight | 0.25 kg |
Shipping & availability
When can SR2B121B be shipped?
SR2B121B is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up SR2B121B in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for SR2B121B and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for SR2B121B, subject to availability and destination.
This product is part of the Zelio Logic range, an offer of smart relays for simple automation systems from 10 to 40 I/Os. The compact smart relay provides a real alternative to solutions based on cabled logic or specific cards. It comes with display and clock. Checks program memory on each power up and 0 to 240 with ladder programming number or control scheme lines. Easy to use, Zelio Logic provides a real alternative to solutions based on cabled logic or specific cards It offers 4 relay outputs with normally opened contact and 8 discrete inputs. It is a smart relay with a rated supply voltage of 24V AC, a maximum supply current of 145mA (without extension) and a power consumption of 4VA without extension. It is an IP20 and IP40 rated product. It weighs 0.25kg. This product meets EN/IEC 61000-4-3, EN/IEC 61000-4-4 level 3, EN/IEC 61000-4-11, EN/IEC 60068-2-27 Ea, EN/IEC 61000-4-5, EN/IEC 61000-4-6 level 3, EN/IEC 61000-4-2 level 3, EN/IEC 60068-2-6 Fc and EN/IEC 61000-4-12 standards. Simple to select, install and program, Zelio Logic is suitable for all your applications. Flexible, it offers you the choice of 2 ranges, compact or modular, extendable and 2 programming languages (FBD or LADDER). Easy to use, Zelio Logic provides a real alternative to solutions based on cabled logic or specific cards.
Specifications
Specifications
| Range of product | Zelio Logic |
| Product or component type | Compact smart relay |
| Local display | With |
| Number or control scheme lines | 0…240 with ladder programming, 0…500 with FBD programming |
| Cycle time | 6…90 ms |
| Backup time | 10 years at 25 °C |
| Clock drift | 12 min/year at 0…55 °C, 6 s/month at 25 °C |
| Checks | Program memory on each power up |
| [Us] rated supply voltage | 24 V AC |
| Supply voltage limits | 20.4…28.8 V |
| Supply frequency | 50/60 Hz |
| Maximum supply current | 145 mA (without extension) |
| Power consumption in VA | 4 VA without extension |
| Isolation voltage | 1780 V |
| Protection type | Against inversion of terminals (control instructions not executed) |
| Discrete input number | 8 |
| Discrete input voltage | 24 V AC |
| Discrete input current | 4.4 mA |
| Discrete input frequency | 57...63 Hz, 47...53 Hz |
| Voltage state 1 guaranteed | >= 14 V for discrete input |
| Voltage state 0 guaranteed | <= 5 V for discrete input |
| Current state 1 guaranteed | >= 2 mA (discrete input) |
| Current state 0 guaranteed | <= 0.5 mA (discrete input) |
| Analogue input number | 0 |
| Input impedance | 4.6 kOhm for discrete input |
| Number of outputs | 4 relay |
| Output voltage limits | 5...30 V DC (relay output), 24...250 V AC |
| Contacts type and composition | NO for relay output |
| Output thermal current | 8 A for all 4 outputs for relay output |
| Electrical durability | AC-12: 500000 cycles at 230 V, 1.5 A for relay output conforming to IEC 60947-5-1, AC-15: 500000 cycles at 230 V, 0.9 A for relay output conforming to IEC 60947-5-1, DC-12: 500000 cycles at 24 V, 1.5 A for relay output conforming to IEC 60947-5-1, DC-13: 500000 cycles at 24 V, 0.6 A for relay output conforming to IEC 60947-5-1 |
| Switching capacity in mA | >= 10 mA at 12 V (relay output) |
| Operating rate in Hz | 0.1 Hz (at Ie) for relay output, 10 Hz (no load) for relay output |
| Mechanical durability | 10000000 cycles for relay output |
| [Uimp] rated impulse withstand voltage | 4 kV conforming to EN/IEC 60947-1 and EN/IEC 60664-1 |
| Clock | With |
| Response time | 50 ms with ladder programming (from state 0 to state 1) for discrete input, 50 ms with ladder programming (from state 1 to state 0) for discrete input, 50...255 ms with FBD programming (from state 0 to state 1) for discrete input, 50...255 ms with FBD programming (from state 1 to state 0) for discrete input, 10 ms (from state 0 to state 1) for relay output, 5 ms (from state 1 to state 0) for relay output |
| Connections - terminals | Screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) semi-solid, Screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) solid, Screw terminals, 1 x 0.25...1 x 2.5 mm² (AWG 24...AWG 14) flexible with cable end, Screw terminals, 2 x 0.2...2 x 1.5 mm² (AWG 24...AWG 16) solid, Screw terminals, 2 x 0.25...2 x 0.75 mm² (AWG 24...AWG 18) flexible with cable end |
| tightening torque | 0.5 N.m |
| Overvoltage category | III conforming to IEC 60664-1 |
| Net weight | 0.25 kg |
| Immunity to microbreaks | 10 ms repeated 20 times |
| Product certifications | C-Tick, CSA, GL, UL, GOST |
| Standards | IEC 61000-4-3, IEC 61000-4-4 level 3, IEC 61000-4-11, IEC 60068-2-27 Ea, IEC 61000-4-5, IEC 61000-4-6 level 3, IEC 61000-4-2 level 3, IEC 60068-2-6 Fc, IEC 61000-4-12 |
| IP degree of protection | IP20 (terminal block) conforming to IEC 60529, IP40 (front panel) conforming to IEC 60529 |
| Environmental characteristic | EMC directive conforming to IEC 61000-6-2, EMC directive conforming to IEC 61000-6-3, EMC directive conforming to IEC 61000-6-4, EMC directive conforming to IEC 61131-2 zone B, Low voltage directive conforming to IEC 61131-2 |
| Disturbance radiated/conducted | Class B conforming to EN 55022-11 group 1 |
| Pollution degree | 2 conforming to IEC 61131-2 |
| Ambient air temperature for operation | -20…40 °C in non-ventilated enclosure conforming to IEC 60068-2-1 and IEC 60068-2-2, -20…55 °C conforming to IEC 60068-2-1 and IEC 60068-2-2 |
| Ambient air temperature for storage | -40…70 °C |
| Operating altitude | 2000 m |
| Maximum altitude transport | 3048 m |
| Relative humidity | 95 % without condensation or dripping water |
| Unit Type of Package 1 | PCE |
| Number of Units in Package 1 | 1 |
| Package 1 Height | 6.600 cm |
| Package 1 Width | 9.100 cm |
| Package 1 Length | 10.000 cm |
| Package 1 Weight | 243.000 g |
| Unit Type of Package 2 | S03 |
| Number of Units in Package 2 | 30 |
| Package 2 Height | 30.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 7.763 kg |
| Warranty (in months) | 18 |
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