Critical Environment Technologies GEM-II, Руководство по эксплуатации

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© 2014 All rights reserved. Data subject to change without notice. 37
Rev. E | 2014.10 GEM-II - Operation Manual
NOTES:
1. Dip switches in the “up” position are “on”.
2. Time delay durations can be changed by user.
3. Fixed delay durations indicated above are factory default settings.
7.4 Internal audible alarm operation
If DIP switch “5” is in the “up” position, the internal audible alarm responds to whatever
commands it is given by the microprocessor in the circuit.
If DIP switch “5” and DIP switch “4” are in the “up” position, the audible alarm responds after the
user preset time delay function for the audible alarm has timed out.
If DIP switch “5” is in the “down” position, the audible alarm does not respond at all.
The internal audible alarm normally activates with a steady tone when a “high” gas alarm
condition exists.
The internal audible alarm normally activates with a pulsing tone when a fault condition exists.
A fault condition could consist of any of the following:
• Remote catalytic or solid state sensor failure (open loop)
• Analog signal from a remote LPT-A or LPT is not registering with the GEM.
• Smart sensor board is not plugged into the main board.
NOTE:
Fault conditions automatically override the ON / OFF DIP switch “5” if it has been set to
the “up” position to turn the audible alarm off.
7.5 Jumpers
There are two banks of jumpers located directly below the DIP switches. One bank of nine (9)
jumpers (“J7” upper bank) and one bank of four (4) jumpers (“J6” lower bank). These jumpers
allow the user to perform a wide range of set up and calibration functions. The following table
details the jumper settings for each bank of jumpers and explains the function enabled when
these jumper positions are selected.
NOTE: Always set jumper from J6 first followed by jumper from J7.