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5.0
Operation
This chapter describes the operational capabilities of the MR-401.
5.1
Addressable/Analog Devices
The MR-401 System supports up to 3 loops with a total of 720 MGC addressable devices.
Configuration is done via the MGC-400 software configurator.
Additional Information
•
The addressable loop can be configured for Class A (Class X) or Class B operation.
•
T-tapping is not recommended.
•
Unshielded twisted pair (UTP) is recommended.
•
A short or open on the loop will activate the common trouble sequence with a latching
trouble. (Class A only)
•
The maximum number of isolators is determined by the loop current.
•
The MR-401 FACP will test the sensitivity of a single sensor address every 4 minutes.
Each address will be tested once in approximately every 11 hours.
Table 7 Settings Permitted in UL864
NOTICE TO USERS, INSTALLERS, AUTHORITIES HAVING JURISDICTION, AND OTHER INVOLVED PARTIES
This product incorporates field-programmable software. In order for the product to comply with the requirements in the Standard for
Control Units and Accessories for Fire Alarm Systems, UL 864, certain programming features or options must be limited to specific
values or not used at all as indicated below.
Program feature or option
Permitted in UL 864? (Y/N)
Possible settings
Settings permitted in UL
864
Test Signal for Dialler
Y
6, 12, 24 hours
6 hours maximum
Building/Property Safety Input
N
Not Applicable
Not Applicable