Technical Specifications EM-8001
System properties
Contact inputs
| Description | Specification |
|---|---|
| Voltage | 30VAC or 30VDC max. |
| Vil | <4.4V |
| Vih | >4.7V |
| Note | - 10k pull-up to 12VDC - Input can be a contact to GND or voltage - Keep the length of the cables to the contact input minimal |
Relay contact
| Description | Specification |
|---|---|
| Max. load | 30VDC / 1A, 30VAC / 1A (resistive load) |
I/O bus
| Description | Specification |
|---|---|
| Cable type | RS485 Modbus cable (twisted pair, 4-wire (inc. GND signal), minimal 0.6mm, 22 AWG) |
| Length | < 1km |
| Termination resistor | 120Ω |
| Characteristic cable impedance | 120Ω |
For reliable operation, an RS485 cable must always be installed in a linear bus topology (daisy chain).
See Quickstart EM|Wiring diagram EM-8001 to Octalarm alarm dialler for further explanation.
Power (external)
| Description | Specification |
|---|---|
| Consumption | DC: 1 Watt AC: 1.5 Watt (RMS), single-sided rectified 5 Watt (charging capacitor) |
| Imax | 0.22A |
| Power supply range | 8 - 30VDC 20 - 30VAC |
Note: when using the relay, the power supply must be at least 15VDC.
Service Life
| Description | Specification |
|---|---|
| Calculated MTBF | 10.64 years, as per the 'parts count' method |
Housing and operating conditions
| Description | Specification |
|---|---|
| Housing | DIN-Rail (TS35) assembly and wall mounting |
| Dimensions (W x H x D) | 71 x 90 x 33 mm |
| Weight | 135g |
| Operating temperature | -30°C ... +70°C |
| Storage temperature | -40°C ... +85°C |
| Humidity | 20% - 80% (non-condensing) |
| IP code | IP30 |
| Max. height | Up to 2,000 metres |
Regulations
| Description | Specification |
|---|---|
| EMC | Emission: EN 55032 (2012) + AC (2013), class B Immunity: EN 55024 (2010), 10Vrms |