Crowcon Gasmaster - Page 34

Menu system overview Crowcon Gasmaster
30
Menu Item Values (as shown on display) Description
Supervisor menu (allows system tests to be performed, and configurations to be changed. A pass
cont. word is required to enter this mode, see section 3.7 for details.)
User action Apply gas and calibrate the detector.
Apply gas
User confirmation Press Continue when the detector has been
Continue when reading is calibrated and is providing the correct output signal.
stable
Calibrate Calibration Wizard cont.
Result
Value = Pass Channel has correctly calibrated.
Fail Input signal was out of acceptable range, re-calibrate
the detector and check that its output current is
proportional to the gas level
User action Reminds the user to remove the calibration gas and
Purge gas re-expose the detector to clean air.
Test Relay common
Relay alarm L1
Alarm L1 common
Values = No alarm
In alarm
Relay alarm L2
Alarm L2 common
Values = No alarm
In alarm
Fault
Fault common
Values = No fault
In fault
Channel #1, #2, #3, #4
Sim Input #1
Values = 0.0 - 25.5 mA
0.0 - 66.7 mA
for fire detectors
Force output #1
Values = 0.0 - 25.5 mA
Forces common level 1, 2 or Fault relays.
L1 = Level 1.
L2 = Level 2
The 'values' show the current state of each relay
(relays may be normally energised or de-energised
dependant on configuration):
'No alarm' or ‘No fault’ means the relay is in its
normal state.
'In alarm' or ‘In fault’ means the relay is in its alarm
or fault state.
Use the Up and Down buttons to change the relay
state, press Back to exit, the relay will return to its
normal state
Use the Up and Down buttons to select the desired
channel. The channel warning symbol
 will show.
Channel alarm relays can be tested as described
above.
When selected, displays the input signal level for the
selected channel (e.g. 4.1 mA).
The channel warning symbol
 will show.
Use the Up and Down buttons to force the input to
the required level. The reading on the channel display
will change accordingly and alarms will activate at the
preset points.
Use the Accept/Reset button to silence alarms if
necessary. Press Back to exit, the input will return to
its normal state.
When selected, displays the analogue output signal
level for the selected channel (e.g. 4.1 mA).
The channel warning symbol
will show.
Use the Up and Down buttons to force the output to
the required level.
Use to simulate
inputs and
outputs for
testing and
commissioning
purposes.