ICE-400 Series Intercom Stations
Page 4
Document IM-ICE-400-1.1
speaker and LED are connected using two terminal MTA connectors so that the customer can connect a 4-terminal
MTA-100 to the switch input terminals.
MTA Pin
Signal
1 LED
-
2 LED
+
3
Switch 2 -
4
Switch 2 +
5
Switch 1 -
6
Switch 1 +
7 Speaker
-
8 Speaker
+
4.
Two Sided Door Primary/Secondary Pair
The two sided Door Primary/Secondary paired stations are meant to provide an intercom on both sides of a door
at the same time but require only one audio channel. The two stations are configured as a single intercom station
with one call switch. This is achieved by paralleling the speaker and switch of the secondary station to the speaker
and switch of the primary station. The following diagram shows the necessary connections. The connections can
be made using a 4-wire cable with a 4-pin MTA connectors at one end. The 4 pins of the 4-pin MTA connector are
connected to the header CN6 (CN7) labeled Slave B of the primary station and are connected to the secondary
speaker and switch pig tail wires with Marr connectors. Note that the switch and speaker connections are not
polarity sensitive so that the connector can be reversed.
The two intercom stations are assigned custom numbers, where they are both 2-gang stations the primary
intercom station is ICE-420-CUS-110 while the secondary station is ICE-320-CUS-101.
SPK
SW
SW
SPK
S
lave
B
SPK+
SPK
-
SWB+
SWB-
SWA+
SWA-
LED+
LED-
S
la
ve A
SPK
SW
SW
SPK
LI
NE
+
-
-
+
PCB
06741-04
F
a
cep
la
te
Pin 1
Pin 1
Pin 1
Pin 1
SW B
SW B
To SAB 400(401) or SCC 400(401)
Maintain Polarity and Leave Shield
Unconnected at this end
Secondary ICE-320-CUS-101
Primary ICE-420-CUS-110
Marr
Conector
Marr
Conector
Marr
Conector
Marr
Conector
4-wire Cable Terminated
with MTA-4 Connector
Yellow
Yellow
Green
Black
Two Sided Door Primary/Secondary Pair with Two Call Switches acting as one call switch
