MX945 MX Digital Loop Mini-IAM Installation Instructions - Dated 2022 R002

*29011141R002*
MX945 MX Digital Loop Mini-IAM
Installation Instructions
29011141R002 2
MX945 MX Digital Loop Mini-IAM Installation Instructions Safety Note
Note:
Read the safety information before you install the equipment. This equipment must
be installed by a skilled person only. A skilled person is an installer with appropriate technical
training. The installer must be aware of potential hazards during installation and measures
available to minimize risks to the installer and other people.
Introduction
The MX945 MX Digital Loop Mini-IAM (Individual Addressable Module) communicates with the
HSM3105 MX Digital Loop Card. It is used to monitor intrusion detection devices such as door/
window contacts, motion detectors, etc. It provides one supervised and power-limited, Class B
detection circuit for monitoring single or multiple normally open contacts.
Features
The MX945 identifies and communicates the status of the monitored contacts and wiring to the
alarm system. The MX945 contains an output for an external LED (not supplied). If a remote LED
is used, it must be located in the same electrical enclosure and be rated for 10mA. As a status
indicator, the LED lights up when the monitored contact (normally off) switches to an active state.
Note:
With the IQ Pro, the Alarm LED feature is default ON. When an external LED is connected
to the Output terminals of the MX945, on activation of the specific MX945 device, the LED will
turn to steady ON. Installers need to make sure that the connected LED is also taken into
account during current calculation of the loop.
LED on polling configuration option:
An external LED connected to the MX945 can also be
configured for blinking whenever the MX Expander module scans the device. Check panel
configuration option for the same.
Mounting Instructions
Table 1:
MX945 overall dimensions
Height: 13mm
Width: 48mm
Depth: 57mm
Weight: 22g
The MX945 may be mounted by itself in any listed electrical enclosure with sufficient depth to
accommodate the MX945. A mounting tab is provided to secure the Mini IAM to its enclosure.
Environmental Characteristics
•
Operating temperature: 32°F to 120°F (0°C to 49°C)
•
Humidity: up to 93% relative humidity at 90°F (32°C)
Electrical Characteristics
• Input voltage (MX Digital Loop): 40 VDC maximum
•
Standby current: 0.46 mA
•
Alarm without remote LED: 0.67 mA (maximum spur circuit current at 2.7 VDC)
3
MX945 MX Digital Loop Mini-IAM Installation Instructions •
Alarm with remote LED: 4.5 mA
Programming the address
The MX945’s default factory set address is 255. The address must be set to the device’s loop
address by connecting the MX945 to the HSM3105 MX Expander module automatically.
Note:
Once the address has been programmed, take note of the device location and address
number in order to include it.
Cabling and Wiring
Two pairs of connection terminals (L+ and L-) are provided on the terminal block. These terminals
are used for connecting the module to the HSM3105 MX Loop Card. Refer to the HSM3105 MX Loop
Card manual for loop circuit ratings. A terminal (SH) is provided for the shield if shielded wiring is
used. Only one cable (1.5mm
2
or 2.5mm
2
) can be connected at any one terminal.
For the wiring:
1.
Contact wiring - maximum 10 ohms line resistance. Use a 10K resistance for ground fault
testing.
2.
If configuring the MX945 in non-interrupt mode, connect the wiring for the monitored contact
as shown in Figure 2. Make sure all conductors are free of contacts to earth.
3. If configuring the MX945 in the interrupt mode to monitor a normally open contact, connect
the wiring for the monitored contact as shown in Figure 3. In this mode, the MX945 does not
monitor the wiring for the contact.
4.
Verify the correct polarity of wiring before connecting the MX945 to the addressable loop
circuit.
5.
If used, the LED must be rated for 10 mA and located in the same enclosure as the Mini IAM.
6.
All contact wiring must be located within the same electrical enclosure as the Mini IAM.
7.
SLC wiring (MX Digital Loop) is supervised and power limited.
8.
All contact wiring is supervised and power limited.
Figure 1:
MX945 Wiring Diagram - Normally open
IN-
IN+
O-
O+
L-
L+
L-
L+
NO
OPTIONAL
REMOTE
LED
FROM MX DIGITAL LOOP
OR PREVIOUS DEVICE
TO MX DIGITAL LOOP
OR NEXT DEVICE
SH
CONNECT TO SHIELD (IF USED)
MX945 MX Digital Loop Mini-IAM Installation Instructions
4 Figure 2:
MX945 Wiring Diagram - Normally closed
IN-
IN+
O-
O+
L-
L+
L-
L+
NO
OPTIONAL
REMOTE
LED
FROM MX DIGITAL LOOP
OR PREVIOUS DEVICE
TO MX DIGITAL LOOP
OR NEXT DEVICE
SH
CONNECT TO SHIELD (IF USED)
Figure 3:
MX945 Wiring Diagram - Single end of line
IN-
IN+
O-
O+
L-
L+
L-
L+
NO
OPTIONAL
REMOTE
LED
FROM MX DIGITAL LOOP
OR PREVIOUS DEVICE
TO MX DIGITAL LOOP
OR NEXT DEVICE
SH
CONNECT TO SHIELD (IF USED)
200 OHM
END OF LINE RESISTOR
Figure 4:
MX945 Wiring Diagram - Double end of line
IN-
IN+
O-
O+
L-
L+
L-
L+
NO
OPTIONAL
REMOTE
LED
FROM MX DIGITAL LOOP

OR PREVIOUS DEVICE
TO MX DIGITAL LOOP
OR NEXT DEVICE
SH
CONNECT TO SHIELD (IF USED)
200 OHM
END OF LINE RESISTOR
100 OHM
MONITOR
RESISTOR
Ordering Information
Table 2:
Ordering Information
Component Description
Number
Mini IAM
MX945
FCC and ISED Canada Information
This information applies to the MX945 MX Digital Loop Mini-IAM module.
5
MX945 MX Digital Loop Mini-IAM Installation Instructions Modification state ment
Ty
co Safety Prod
ucts Canada Ltd. has not approv ed any changes or modifications to this devi ce by
the user. Any changes or modificati
ons c
ould
void the user’s authority to operat e the equipment.
I
nte rfe rence statem ent
T
his devi ce complies with Part 15 of the FCC rules. Operat ions are subject to the follow ing two
condi
tions: (1)
This
devi ce may not cause harmful interfere nce and (2) This devi ce must acce
pt any
interfere nce re ceived, including interferen
ce that may cause undesire d operati
on.
This equipment has been tested and found to comply wit
h the limits for a C
lass B digital devi ce,
pursuant to Part 15 of the FCC
Rules. These limits are designed to provi
de re asonable prot ection
against harmful interferen
ce in a residenti
al installation. This equipment generat es, uses and can
rad iate rad io fre quency energy and, if not installed and used in accord ance with the instructions,
may cause harm
ful interfere nce to rad io communications. How ev er, there is no guaran tee that
interfere nce will not occur in a particular installation. If this equipment does cause harmful
interfere nce to rad io or telev ision re ception, which can be deter-mined by t urning
the equipment
off and on, the user is encourag
ed to try to corre ct the interfere nce by o ne or more of the follow ing
m
easures :
• R e-orient the re ceiving antenna.
• I ncre ase the separa
tion betwee
n the equipme
nt and re ceiver.
• Co
nnect the equipment into an outlet on a circu it differe nt fro m that to which the re ceiver is
connected.
• Co
nsult the dealer or an exp erien
ced ra dio/televi sion technician for help.
The user may find the following booklet prepared by the FCC useful: "How to Identify and Resolve

Radio/Television Interference Problems". This booklet is available from the U.S. Government

Printing Office, Washington D.C. 20402, Stock # 004-000-00345-4.
CAN ICES-3 (B)/NMB-3(B)
Trademark
The trademarks, logos, and service marks displayed on this document are registered in the

United States [or other countries]. Any misuse of the trademarks is strictly prohibited and Tyco

will aggressively enforce its intellectual property rights to the fullest extent of the law, including

pursuit of criminal prosecution wherever necessary. All trademarks not owned by Tyco are the

property of their respective owners, and are used with permission or allowed under applicable

laws. Product offerings and specifications are subject to change without notice. Actual products

may vary from photos. Not all products include all features. Availability varies by region; contact

your sales representative.
© 2022 Johnson Controls. All rights reserved. JOHNSON CONTROLS, TYCO and DSC are trademarks

of Johnson Controls. Toronto, Canada ∙ www.dsc.com Tech support:
1-800-387-3630
(Canada and
U.S),

or 1-905-760-3000 (International)