MODEL 54e pH/ORP |
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| SECTION 5.0 | |||
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| SOFTWARE CONFIGURATION | |
5.7 CHANGING ALARM PARAMETERS (continued) |
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Alarm Control Parameters | 3. |
| Menu Item | Options |
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| Activation Method | Process/Temperature |
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| Control Mode | Normal/TPC |
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| Activation Method |
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| Control Mode |
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| Alarms 1, 2, and 3 can each be configured with the options above. | ||||
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| The default options are that all three alarms are Process (pH or | |||
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| ORP/Redox), and Normal (not TPC). This is a common configura- | |||
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| tion and may not require changes. If no changes are desired, skip to | |||
| Exit | Enter |
| step 4a. |
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| To make changes in these parameters, highlight the desired menu | |||
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| header and press Enter 4. The value now being used is displayed | |||
| Activate: Process |
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| and the F4 key can now be pressed to Edit the item. Once Edit has | ||||
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| been pressed, change the item as needed and then press Save 4 to | |||
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| store the value. Repeat for the other output and/or items as needed. | |||
| Exit | Edit |
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Alarm Setup Parameters (for Normal Alarms only)
Alarm: Low
Setpoint: 0.01 pH
Delay: 0 sec
ExitEnter
Hysteresis: 0.01 pH
Delay: 0 sec
Relay Default: None
ExitEnter
4a. |
| Menu Item | Options |
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| Alarm (action) | Low/High/Off |
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| Setpoint | |
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| Hysteresis | |
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| Delay | |
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| Relay default | None/Close/Open |
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These parameters can be adjusted by highlighting the desired item and pressing the Edit 4 key. Once Edit has been pressed, change the item as needed and then press Save 4 to store the value.
"Alarm action" determines whether alarm will activate when the reading exceeds the setpoint (high alarm) or when it drops below the setpoint (low action). It can also be turned off (i.e. not used).
"Hysteresis" is a deadband that prevents deactivating a relay until the reading has dropped below the setpoint minus the hysteresis amount (high alarm example).
"Delay" will delay activation (and deactivation) of the relay for a cer- tain number of seconds. Larger delays can reduce relay chatter.
"Relay Default" determines how the relay will act if there is a fault or hold condition. Each alarm can be forced on (Close), off (Open) or can remain unchanged (None). The factory configuration is "None".
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