CHAPTER 2 NDA-24296
Page 82
Revision 1.0
PH-M22
MMC

PH-M22

MMC

1. General Function

The main functions of the PH-M22 circuit card are as follows:

to collect key setting information on the TOPU of the ISW and send the information to the ISW/the

othe r LNs, dep e nding on th e ISEL key s etting o n th e I SW. ( fo r IPX-U system)

to co llect various alarm in format ion from all the I MGs/IS W and activate MJ/M N LE D on the TOP U

display. ( for IPX-U system)

to send out the key information to EMA within the sam e LMG (for IPX-UMG system)

to collect the external MJ/MN alarm information output by EMA in each LMG (for IPX-UMG system)

This ci rcu i t card is u s ed fo r th e IPX-U/IPX -UMG s yst em.

Figure 2-30 Location of PH-M22 (MMC) in IPX-U System
PZ-DK222
(TOP KEY)
PH-PC40
PH-M22
EMA
RELAY
RECEIVER
PZ-DK222
(TOP KEY)
PH-PC40
PH-M22
EMA
RELAY
RECEIVER
PZ-DK227
(TOP KEY)
PH-PC40
PH-M22
EMA
RELAY
RECEIVER
ISEL
ISW
LN
LN
AUDIBLE
AND
VISUAL
ALARM
INDICATING
PANEL
KEY INFORMATION
ALM INFORMATION
SEL