Sensor Control Unit

SCU 800

Features

• Evaluation of temperatures measured by sensor cables SEC 15 and/or external sensors ESD
• Two sensor cable inputs A and B
• Alarm triggering via differential and maximum temperature evaluation
• Response characteristic according to EN54-5, class A1, approved by VdS Schadenverhütung, VdS no.: G 205143
• Intelligent evaluation algorithms prevent false alarms
• Highly durable via utilisation of maintenance-free components, RoHS compliant
• Alarm indication on unit front via LEDs
• Low power consumption
• Up to 64 programmable individual zones with alarm and fault status signalling to superordinate systems via protocol
• SCU 800-03: One common fault relay and one fire alarm relay each per sensor cable input
• SCU 800/16: 16 zone relays for fire alarms, faults and pre-alarms per programmed sensor cable zone, and one common fault relay
• Relay outputs configurable with loop resistors for closed-circuit monitoring
• EMC approved cover gasket
• Metric polyamide cable-glands with NBR O-Ring and seal

Front panel displays

• Fire alarm: LED red (1x per Sensor cable input A and B)
• Fault: LED orange
• Operation: LED green
• Measuring cycle: LED orange
• Data Transmission: LED orange

System specifications

• Operating temperature: -25 °C …+70 °C (0 °C … +40 °C approved by VdS)
• Ingress protection: IP 65
• Measurement resolution: 0,1 °C
• Repeatability:  0,1 K
• Sensor quantity: Up to 99 sensors per sensor cable input
• Sensor cable length: Up to 250 m per sensor cable input including connection cable CC15

Connections and interfaces

• K1 und K2: Sensor cable inputs
• 24 V DC: Power supply
• RS232: For unit parameterisation or connection to superordinate systems
• RS485: Data interface for LIST Master/Slave network, or connection to superordinate systems, or unit parameterisation
• Relay outputs: For fire alarms and common fault signalling
• Reset: Galvanically isolated external reset input

Supported software protocols

• MODBUS (RTU) via serial interface RS232 or RS485

General data

• Dimensions: 326,0 x 179,0 x 91,0 mm (w x h x d, maximum including cable-glands)
• Case material: Aluminium, powder coated in RAL 7040, grey
• Power supply: 21 V … 29 V DC
• Relay outputs: Switching voltage: 48 V DC / 32 V AC max. Switching current: 250 mA max. (resistive load)
• Input: 1 x external reset (5 V DC)

SCU 800-03:

• Weight: 1,95 kg, including cable-glands
• Current draw: 80 mA (normal operation) / 100 mA (alarm) at 24 V DC
• Power consumption: Max. 2,4 W
• Relays: 1 x fire alarm per sensor cable input, 1 x common fault

SCU 800/16:

• Weight: 2,17 kg, including cable-glands
• Current draw: 115 mA (normal operation) / 240 mA (alarm) at 24 V DC
• Power consumption: Max. 5,8 W
• Relays: 16 zone relays for fire alarms, faults and pre-alarms per programmed sensor cable zone, and one common fault relay

Ordering information

• Sensor Control Unit SCU 800-03
• Sensor Control Unit SCU 800/16

Scope of delivery

• Sensor Control Unit SCU 800-03 including metric cable glands and connection materials, LISTmemory USB flash drive
• Sensor Control Unit SCU 800/16 including metric cable glands and connection materials, LISTmemory USB flash drive

SCU 800-03-EX

Features

• ATEX marking for use in zones 2 and 22
• Evaluation of temperatures measured by sensor cables SEC 15 and/or external sensors ESD
• Two sensor cable inputs A and B
• Alarm triggering via differential and maximum temperature evaluation
• Response characteristic according to EN54-5, class A1, approved by VdS Schadenverhütung, VdS no.: G 205143
• Intelligent evaluation algorithms prevent false alarms
• Highly durable via utilisation of maintenance-free components, RoHS compliant
• Alarm indication on unit front via LEDs
• Low power consumption
• Up to 64 programmable individual zones with alarm and fault status signalling to superordinate systems via protocol
• One common fault relay and one fire alarm relay each per sensor cable input
• Relay outputs configurable with loop resistors for closed-circuit monitoring
• Mounting via wall-mount adaptors that may be oriented horizontally or vertically
• EMC approved cover gasket
• Metric polyamide Ex cable-glands with NBR O-Ring and TPE seal

Front panel displays

• Fire alarm: LED red (1x per Sensor cable input A and B)
• Fault: LED orange
• Operation: LED green
• Measuring cycle: LED orange
• Data Transmission: LED orange

System specifications

• Type of protection zone 2: Ex II 3G Ex nA IIC T4 Gc
• Type of protection zone 22: Ex II 3D Ex tc IIIB T125 °C Dc
• Operating temperature: -25 °C …+70 °C (0 °C … +40 °C approved by VdS)
• Ingress protection: IP 65
• Measurement resolution: 0,1 °C
• Repeatability:  0,1 K
• Sensor quantity: Up to 99 sensors per sensor cable input
• Sensor cable length: Up to 250 m per sensor cable input including connection cable CC15

Connections and interfaces

• K1 und K2: Sensor cable inputs
• 24 V DC: Power supply
• RS232: For unit parameterisation or connection to superordinate systems
• RS485: Data interface for LIST Master/Slave network, or connection to superordinate systems, or unit parameterisation
• Relay outputs: For fire alarms and common fault signalling
• Reset: Galvanically isolated external reset input

Supported software protocols

• MODBUS (RTU) via serial interface RS232 or RS485

General data

• Dimensions: 462 x 452 x 238 mm (w x h x d, maximum including cable-glands and wall mounts)
• Case material: Glass-fibre reinforced polyester, black
• Surface resistance: < 109 Ω
• Power supply: 21 V … 29 V DC
• Relay outputs Switching voltage: 48 V DC / 32 V AC max. Switching current: 250 mA max. (resistive load)
• Input: 1 x external reset (5 V DC)
• Weight: 6 kg including cable-glands and wall mounts
• Current draw: 80 mA (normal operation) / 100 mA (alarm) at 24 V DC
• Power consumption: Max. 2,4 W
• Relays: 1 fire alarm per sensor cable input, 1 common fault

Ordering information

• Sensor Control Unit SCU 800-03-Ex

Scope of delivery

• Sensor Control Unit SCU 800-03-Ex including four wall-mounts, screw plugs in housing bores, cable-glands in plastic bag
• LISTmemory USB flash drive