Seitron RGY 000 MBP4 Operation, Installation, And Maintenance Manual

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x 230V~ power supply
x Controls up to 4 zones
x Manages CO, L.P.G. and Methane (CH
x Wide parameters configuration freedom
x Last alarm conditions data retention
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6 x LCD backlight 2 x 16 characters display
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9 modules DIN rail mount
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x Compliant with EN60079-29-1 performance standard
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This is a microcontroller based device capable of monitoring the
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gas concentration in up to 4 different zones: for each of these a
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4 .. 20 mA transmitter can be wired for measurement and
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detection of either L.P.G., Methane or Carbon Monoxide (CO).
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After power-up the display shows the following information:
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where ' nnnnnn ' is the firmware version installed in the device.
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This information will remain visible for about 2 seconds. After this
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D time the main information will be displayed (example):
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à S Each zone provides the following information:
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The first letter from left explains the transmitter type wired to the
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central unit.
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The transmitters which can be wired to the central unit can be
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different for each zone; the detectable gases are the following:
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- L.P.G.:
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- Methane (CH ):
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- Carbon Monoxide:
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Values displayed on the right, in % L.E.L. (in case L.P.G. or
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Methane transmitters are connected) or ppm (in case of Carbon
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Monoxide) are the actual gas concentration values measured by
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the transmitters. The last letter shown on the display for each zone
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indicates the actual state of the relevant transmitter as explained
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in the following:
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: Active state (measuring, normal operation).
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D U : Fault on the ' 'as transmitter (Iout=2 mA).
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: ' 'ault over the current loop (either short or open circuit
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between any of the sensor wires: Iout=0 mA ).
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G : ' 'realarm state.
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: ' 'larm state. When '
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8 concentration value, this means that the upper limit of the
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measuring range has been exceeded. The '
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corresponds to an input current value above 20mA.
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The central unit can manage separately the pre-alarm and alarm
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conditions through two distinct, Normally Open, output relays.
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In case the prealarm threshold is reached, the central unit enables
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the relevant relay, which, in turn, closes its output contacts.
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U In case the alarm threshold state is reached the unit will also
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enable the alarm relay thus closing the relevant output contact. At
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the same time the central unit has stored the pre-alarm state first
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) transmitters
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display shows letter
display shows letter '
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display shows letter ' '.
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' is shown in place of the
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and the alarm state later: the date and hour when the last has
happened will be retained in the central unit memory.
In case the gas concentration returns below the pre-alarm
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threshold, the relevant relay will return to its normal operation
state or not, according to how the prealarm relay operating mode
was set in the configuration.
For compliance with the current performance standards the
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Alarm relay has always a latched operation and this mode cannot
be modified by the user. Whenever either an Alarm situation ('A')
or an Overrange ('OVR') situation is reached, this relay is kept
energised together with the internal buzzer and the red led until
the user intentionally presses for 3 seconds the '
The central unit features one additional relay with changeover
contacts (SPDT) which can be activated according to events and
operating modes set by the installer through the relevant menu.
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The central unit can retain the date and hour of the last alarm
event happened in each zone.
This information can be read by the user at any time by pressing
for 3 seconds the '
pressing '<' or '>' keys to cycle through the zones.
The central unit is normally powered with 230V~ mains voltage.
At terminals 6 and 7 the user can wire a battery backup system
whose purpose is to grant full functionality to the central unit even
in case of power failure (see section [m] for details).
Normally Closed (NC) output of the auxiliary relay is available at
terminals 15 and 16, while the Normally Open (NO) one is
available at terminals 16 and 17.
This output can be used either for driving 'general purpose' loads
as a siren or an flashing light or, with proper configuration of the
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relevant parameters, to drive a gas shut-off electrovalve.
Moreover this central unit features two single pole relay contacts
for each zone, one for prealarm and one for alarm.
The number of transmitters which can be wired to the central unit
is 4, each compliant with the 4..20 mA current loop system.
In order to make electrical wirings please refer to the suggested
wiring diagrams. Please also note that all the relay outputs of the
central unit do not feed power to the loads.
In other words all outputs are 'voltage free', giving the user more
freedom to use loads with several operating voltages.
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' key when in main display screen, then
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' key.
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