DatasheetThe Limit Alarm Unit monitors standardized current and voltage signals, and transmits the signal to the switching output. A transmitter power supply is provided for the operation of 2-wire and 3-wire transmitters.
The configuration is carried out via DIP switch or USB interface. The switch point can be taught-in and corrected during operation with the front-side Teach-In buttons. The alarm Unit has an adjustable switch-on delay, switch-off delay and a wiper function. Further settings such as memory function and window function can be programmed via USB interface.
The input is protected against polarity reversal and short circuit. The power supply can be provided via the connection terminal blocks or via the optional In-Rail-Bus. The switch status and the device status are indicated by LEDs on front panel. If the device is operated via the In-Rail-Bus, a common fault message is available on the status line.
Product line
| Device Type | Order No. |
|---|---|
| Limit Alarm Unit, Relay, configurable per DIP switch | DG 35200 S |
| Limit Alarm Unit, Relay, configurable per DIP switch, In-Rail-Bus for power supply and group message |
DG 35200 B |
| Limit Alarm Unit, Transistor, configurable per DIP switch | DG 35280 S |
| Limit Alarm Unit, Transistor, configurable per DIP switch, In-Rail-Bus for power supply and group message |
DG 35280 B |
Technical Data
Input
| Current | Voltage | |
| Input signal | 0 to 20 mA, 4 to 20 mA, ± 20 mA 0 to 10 mA, 2 to 10 mA, ±10 mA ABS 20 mA 4 to 20 mA/NE43 (Relay inactive outside the NAMUR range 3.6 to 22 mA) |
0 to 10 V, 2 to 10 V, ± 10 V 0 to 5 V, 1 to 5 V, ±5 V ABS 10 V |
| Input resistance | ≤ 20 Ω | ≥ 1 MΩ |
| Overload | < 50 mA | < 30 V |
| Transmitter supply (Tx) | 16 V (open circuit voltage/short circuit current < 22 V/35 mA) | |
Output
| DG 35200 (Relay): | 250 V AC / 30 V DC / 2 A, Recommended minimum load 300 mW / 5 V / 5 mA |
| DG 35280 (Transistor): | 36 V DC / 50 mA, galvanically isolated, not current limited |
| Resonse time | ≤ 20 ms |
| Switching functions (selectable) |
Make / break contact, ON delay, OFF delay or wiper: OFF, 0.5 s, 1 s, 5 s, 10 s |
| Common fault message | Signal on In-Rail-Bus E (supply circuit) at device failure, cable break und short circuit |
General Data
| Testvoltage | 3 kV AC, 50 Hz, 1 Min., Input against output against power supply/In-Rail-Bus | |
| Working voltage1) (Basic Insulation) |
600 V AC/DC for overvoltage category II and pollution degree 2 acc. to EN 61010-1 |
|
| Protection against electrical shock1) | Protective separation according to EN 61140 by reinforced insulation in accordance with EN 61010-1 up to 300 V AC/DC for overvoltage category II and pollution degree 2 between all circuits |
|
| Ambient temperature | Operation Transport and storage |
–25 °C to +70 °C (-13 to +158 °F) –40 °C to +85 °C (-40 to +185 °F) |
| Power supply | 24 V DC, voltage range 16.8 V to 31.2 V DC, max. 1.0 W | |
| EMC2) | EN 61326-1 | |
| Approvals (pending) | UL (USA/Kanada), UL 61010, Class I, Div. 2 ATEX / IECEx, Zone 2 (nA) |
|
| Construction | 6.2 mm (0.244″) housing, protection class IP 20, mounting on 35 mm DIN rail acc. to EN 60715 |
|
| Connection | Captive plus-minus clamp screws Wire cross-section 0.5 to 2.5 mm2 / AWG 20-14 Stripped length 8 mm / 0.3 in Screw terminal torque 0.6 Nm / 5 lbf in |
|
| Weight | Approx. 70 g | |
- For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
- Minor deviations possible during interference
Block diagram
Dimensions
Terminal assignments
- 1 +Transmitter supply
- 2 +Current input
- 3 −GND
- 4 +Voltage input
- 5Relay
- 6Relay
- 5 +Transistor output
- 6 −Transistor output
- 7 +Power supply 24 V DC
(connected to In-Rail-Bus) - 8 −Power supply 24 V DC
(connected to In-Rail-Bus)
Optional power connection via In-Rail-Bus (see accessories)