SR361
Alarm Unit with Current and Voltage Input and Double Relay Outputs
SR361 is designed for monitoring current and voltage signals in the process industry.
Two output relays with individually adjustable trip functions are available.
LED’s in the front indicate alarm state and correct power supply.
- Current and voltage input
- Direct connection to 2-wire transmitters with built-in supply
- Two relay outputs with independently or simultaneosly switch functions
- Monostable relays for safe tripping at power failure
- SPDT relays with 6 A switch capacity
- High configuration flexibility with DIP switches
- Trip levels and hysteresis adjustable from the front
- Three front LED’s for trip indication and power supply monitoring
- 4 kV isolation between input, output and power supply
- Protective Separation acc. to EN 61010
- 24 V DC power supply
- DIN-rail mounting
Technical Specification
| Input Current | 0(4) to 20 mA |
| Input impedance | 5 Ω |
| Maximum overload | 200 mA |
| Input Voltage | 0(2) to 10 V |
| Input impedance | 120 kΩ |
| Maximum overload | 300 V |
| 2-wire Transmitter Supply +Us | 16 V at UPower = 24 V, (13 … 22 V depending on the supply voltage) current limited ≤ 30 mA |
| Output, Relay 1 & 2 | |
| Relay contacts | 1-pole switch over contact (SPDT) |
| Contact rating max. | AC: 250 V / 6 A, 1500 VA DC: 250 V / 0.2 A, 115 V / 0.3 A, 30 V / 6 A |
| Relay function | Monostable, Normally active or passive (switch selectable) |
| Alarm functions, relay 1 & 2 | High/Low alarm (switch selectable) |
| Alarm indication | Alarm state indicated by yellow LED |
| Response time | approx. ca. 20 ms |
| Operation temperature | -20 to +60 °C / -4 to +140 °F |
| Galvanic isolation | |
| Input / power supply / relay outputs | 4 kVAC, 1 min |
| Relay 1 / Relay 2 | 3 kVAC, 1 min |
| Power supply | |
| Voltage | 24 VAC/DC ±15 %, 48 to 62 Hz (AC supply). 24 V CD, ± 15 %, 1.0 W |
| Typical accuracy | Trip point: ±0.2 % of span |
| Mounting | 35 mm DIN rail acc. to EN 60715 |