MSA BACHARACH MGS-401, Руководство пользователя

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BACHARACH MGS-401 User Manual
network. The Modbus ID is a combination of all three switch positions. The default setting for the
Modbus ID is ‘80’ or OFF, OFF, OFF.
4.2
MGS-401 Configuration
4.2.1
The MGS-401 can be configured as a ‘Controller’ or as a ‘Listener’. If there are no other Modbus
‘controllers’ on the network, the MGS-401 must be configured as a ‘Controller’, see configuration advice
below. As a ‘Controller’ the MGS-401 will actively seek changes to the network data in the connected gas
detectors. If there is a Modbus controller on the network (MGS-408, MGS-402 or another Modbus
controller) other than the MGS-401, the MGS-401 must be configured as a ‘Listener’. When configured as
a ‘Listener’ the MGS-401 not seek network data on the Modbus network but will respond to the activity
between the controller that is seeking the network data from the connected gas detectors. You can have
more than (1) MGS-401 Entrance Monitor on the network at one time – multiple entrances to a monitored
space. If an MGS-401 is configured as a ‘Controller’ all other Entrance Monitors must be configured as
‘Listeners’. The MGS-401 Entrance Monitor can monitor up to (4) different Modbus IDs on the network.
IMPORTANT - When configured the Entrance Monitor is expecting the sensors to be Modbus address 01,
02, 03 and 04 depending on how many are configured. Other configuration features include perimeter
strobe options, relay configuration, and enabling auxiliary inputs. These will be explained in this section.
1. Bank 2, Switch 1 is used to enable the Sensor Modbus Termination. Please refer to Modbus best
practice when making these choice. The default is ‘Not Enabled’ or OFF
2. Bank 2, Switches 2 and 3 are used to configure the number of sensors the MGS-401 is expecting
to be connected to, up to a maximum of 4. The default is one sensor or OFF, OFF
3. Bank 2, Switch 4 is used to configure the MGS-401 for ‘Controller’ mode or ‘Listener’ mode as
described above. The default is ‘Listener’ or OFF.
4. Bank 2, Switch 5 is used to configure the color of the perimeter strobe to either ‘Blue’ or ‘Red’. The
default is ‘Red’ or OFF.
5. Bank 2, Switch 6 is used to configure the Alarm Relay to be ‘Failsafe’. In failsafe mode the relay will
change state when power is turned on and will change state again if power is lost or if there is an
alarm or fault condition. The default is ‘NOT Failsafe’ or OFF.
6. Bank 2, Switch 7 is used to ‘Enable’ the Alarm Relay to change state on a LOW ALARM condition.
The default is ‘NOT Enabled’. NOTE – The MGS-401 will always alarm during a HIGH ALARM
condition or a FAULT condition, this is not configurable and is required by safety standards.
7. Bank 2, Switch 8 is used to ‘Enable’ the Perimeter Strobe during a LOW ALARM condition. The
factory default is ‘DISABLED’ or OFF.
8. Bank 3, Switch 1 is used to ‘Enable’ the >80dB buzzer during a LOW ALARM condition. The factory
default is ‘DISABLED’ or OFF.
9. Bank 3, Switch 2 is used to configure the LOW ALARM Buzzer and Strobe rate to either ’½ Hz’ or ‘2
Hz’. The factory default is ‘½ Hz’ or OFF.
10. Bank 3, Switch 3 is unused. The factory default is ‘DISABLED’ or OFF.
11. Bank 3, Switch 4 is used to configure the HIGH ALARM Buzzer and Strobe rate to either ’½ Hz’ or ‘2
Hz’. The factory default is ‘½ Hz’ or OFF.
12. Bank 3, Switch 5 is unused. The factory default is ‘DISABLED’ or OFF.