eta Control Plex, Installation Instruction

Page: 36 / 40

36
7 General: ControlPlex
®
Rack, E/A external alarm interface EAI300
The EAI300 has particularly been designed for use with the Power-D-Box
®
type PDB-N-CP in connection
with the remote control interface RCI10. It can be installed and de-installed in the Power-D-Box
®
later with
the system live without having to disconnect the application from the mains. The EAI300 only requires a free
ESX300 slot (slot for circuit protectors) in the
Power-D-Box
® .
7.1 Operating mode and application EAI300
The EAI300 has been conceived for connection and free text indication of alarm messages from “external”
alarm contacts and sensors in the plant room by means of a control computer. This could include door
contacts, temperature sensors or alarm contacts of the air conditioning system. The EAI300 interface
communicates with the RCI10 Remote Control Interface installed in the
Power-D-Box
®
via an internal bus.
The RCI10 sub-assembly communicates with a management system or a control computer by means of an
Ethernet interface. With the help of an integral LED an “external” alarm can also be indicated locally on the
EAI300. An integral 24V voltage output can be used directly for reading the alarm contacts. Equally, there are
two potential-free outputs available for activating e.g. a door lock or for realising an additional group signalling
of the ESX300 circuit protectors. Within a
Power-D-Box
®
you can install up to 20 EAI300 sub-assemblies.
7.2 Technical data of EAI300
Interface card for forwarding additional alarms in the engineering room, so-called “external alarms”.
Technical data of EAI300
Operating voltage
DC 20 V … DC 75 V
Dielectric strength DC 100 V for 1 ms
Power consumption
Typically 1.9 W
Internal interfaces EL-Bus
®
and supply via blade terminals
External connection
Two plug-in type 8-pole connection sleeves with
spring-loaded connectors on the front side Cross-section
0.14 mm² … 1.5 mm²
Number of digital inputs: Eight physically isolated inputs
Current consumption 1 mA at 24 V
Input resistance: 22.1 kOhm
Voltage potential “HIGH” level DC 12 V … DC 72 V
Voltage potential “LOW” level DC 0 V … DC 4 V
Number of analog inputs: One physically isolated input
Measuring input 4 mA … 20 mA
Number of digital outputs (relay outputs)
Two physically isolated relay outputs (break contacts)
Max. load current of contact 2 A
Voltage range – contact DC 12 V … DC 72 V
Internal supply voltage for I/O connection Typically DC 24 V
(at Power-D-Box supply voltage ≥ DC 30 V)
Max. load current: 100 mA