© MASS ELECTRONICS Pty Ltd 2006
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DS 15.12 - GENII MZS REM - Multi-zone Station After Hours Remote Expansion Module
August 2013
Specifications
Power Supply
• Voltage: 24VAC ±10% @ 50/60Hz
• Power Consumption: 3VA max
The operating voltage must meet the requirements of Safety Extra Low
Voltage (SELV) to EN60730. The transformer used must be a Class 2 safety
transformer that has the energy and voltage limiting characteristics as
described in the National Electrical Code, ANSI/NFPA70. It must also be sized
and fused in compliance with local safety regulations.
Inputs
• Push buttons for adjusting control values
• Push button for toggling of “digital function”
• Push button for zone selection
Outputs
• No physical outputs
• Display of Temperature and Setpoint
Terminal Identification
1
24VAC Supply
2
0VAC Supply
3 Earth
TERMINAL 3 is for the protection of the Comms circuitry and
must be connected to a good electrical bonded Earth.
COMMS Connection
SHLD 1 Shield from incoming Comms Cable.
+
RS 485 (+) signal.
-
RS 485 (-) signal.
SHLD 2 Shield from outgoing Comms Cable.
Temperature Ratings
• Storage
0 to 50°C non-condensing
• Operating
0 to 40°C non-condensing
Enclosure
The GENII MZSAH REM Modules are housed in switchplate that
mounts in standard electrical wall plates.
Colour:
White
Mounting:
Wall mounted
Installation
• The Cable run between the GENII MZSAH REM and the GENII RMI
should not exceed 500 mtrs. The Comms wiring requires cable
especially suited for RS485. Other shielded cable is not suitable
and may cause spasmodic Comms failures.
• Strictly follow the guidelines when installing the Comms wiring as
outlined in the Genesis II Installation Manual.
• Mount the GENII MZSAH REM in a dry and clean location free of
excess vibration.
The REM address must be set by programming Parameter 0.
Please refer to the Program Functions section of this data
sheet for more specific information regarding this.
Wiring
• The cable used for RS485 Comms must be shielded single
twisted pair, 120 ohms character impedence, 36 to 45pF per
metre capacitance between conductors.
• The Comms cable must be organised as a bus topology. That is,
starting at one end, devices are connected to it until the other
end of the cable is reached. No “stubs” are allowed. To connect
a device to the cable, as cut is made in the cable at the point
where the device is to be situated along it. Then, the two new
ends of the cable are wired into the device. The shields from the
two new ends are then terminated into the terminals marked
SHLD1 and SHLD2.
• Refer to the Genesis Network Installation Instructions for more
information.
FCC Class A Notice
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including
interference that may cause undesired operation.
Note – This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense. Modifications to this
device, may void the authority granted to the user by the FCC to operate this equipment.
