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Description of the Previdia Ultra system parts
Fire detection and extinguishing system
3.18
IFM4R, internal module with 4 relays
The IFM4R module provides 4 relay outputs with voltage-free contacts (Common, Normally Open and Normally Closed).
The activation mode of each relay can be defined during the system configuration phase using the configuration software.
IFM4R comes with:
• 3 screws for securing the module to the grounding bar
• Instructions manual
3.19
IFM4IO, internal module with 4 input/output terminals
The IFM4IO module provides 4 input/output channels (IN/OUT 1, ..., IN/OUT 4) each of which, by means of the
configuration software, can be configured as:
• Supervised output, to drive alarm signalling devices or similar (also indicated as a NAC output)
• Supervised input, to control the status of a device or the acquisition of a command
• Conventional line, for interfacing with a conventional line
• 4-20mA gas detector input
IFM4IO comes with:
• 3 screws for securing the module to the grounding bar
• 4 resistors @1kOhm 1w
• 4 resistors @ 3k9Ohm
[A]
Status LED
[D]
Holes for the Earth bar screws
[B]
Mini USB port
[E]
CAN DRIVE/CAN DRIVE+
connector (opposite)
[C]
Relay-x
Connection
terminals for relay
output x
LED IFM4R
Colour
On solid
Flashing
CAN
Blue
Activity on the CAN communication BUS
OUTx
Green
Output x activated
IFM4R module - technical specifications
Supply voltage
19-30 V
Operating temperature
from -5°C to +40°C
Consumption @
27.6V
stand-by
10mA
maximum
80mA
Maximum voltage on outputs
5A, 30V
B
C
A
E
D
