Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021
119
15.
Object Automation - SAFETY WAY system components
15.1.
P-MACF pressure sensor
The P-MACF differential pressure converter is a developmental version of the P-MAC. It has
two transmission channels of the Local FireBUS and an input of fire signal from the Fire Alarm
System. The P-MACF transmitter is installed in the facility (object) in two cases:
1.
When the iSWAY-FC
,
iSWAY-WFC
,
iSWAY-RFC
,
is away from the protected space and the
required pulse length would be more than 12m. The P-MACF sensor is then connected to
iSWAY-FC
,
iSWAY-WFC
,
iSWAY-RFC
by
Local Firebus loop.
2.
In the case of fire atrial protection, P-MACF sensors are installed in the vestibule, and are
connected to the iSWAY Local FireBUS loop. A 24VDC power supply and a fire signal are
supplied to each sensor. The P-MACF sensor has a SAP fire input with line fault
monitoring. For proper operation of the monitoring function, it is required to connect to the
opposite end (looking from the sensor side) of the monitored line two resistors with the
given value (4,7kΩ) and in the given configuration.
The maximum number of sensors in the
loop (number of protected floors) is 64.
In case of loss of communication between the iSWAY® device and the P
-MACF sensor installed
on the site, iSWAY® goes into emergency operation. Emergency operating mode, consists of
pressure regulation based on pressure readings from the P-MACF if there is one mounted inside
the iSWAY-FC, iSWAY-WFC, iSWAY-RFC.
Fig.15.1 P-MACF pressure sensor - inside view.
24VDC power supply. The minimum supply of the power supply is 0.2 A for each P-MACF.
1.
Cover of electrics
2.
LED diode: red, yellow, green
3.
Zeroing button