EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
NV name | field name |
nviManCool
nviManHeat
nviManOccCmd
nviManualMode
Table C3. Input Variables for Excel 10 FCU Controllers
engineering units: | digital |
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state | default | comments | ||
English (metric) or states plus | ||||
or | ||||
range |
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value |
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SNVT_lev_percent |
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| This input variable can be used for master/slave installations | |
0 to 100% |
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| where the cool output is controlled by an external controller node. | |
163.835% = INVALID |
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| In this case, the output signal of the cooling control algorithm (0- | |
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| 100%) of the master has to be bound to nviManCool and then | |
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| takes over the task of the local (slave) control algorithm while the | |
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| switch levels operate as locally configured. The heating output will | |
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| be closed. | |
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SNVT_lev_percent |
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| This input variable can be used for master/slave installations | |
0 to 100% |
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| where the heat output is controlled by an external controller node. | |
163.835% = INVALID |
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| In this case, the output signal of the heating control algorithm (0- | |
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| 100%) of the master has to be bound to nviManHeat and then | |
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| takes over the task of the local (slave) control algorithm while the | |
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| switch levels operate as locally configured. The cooling output will | |
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| be closed. | |
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SNVT_occupancy |
| OC_NUL | This input variable is from an network connected operator inter- | |
OC_OCCUPIED | 0 | (at application restart) | face or other node that indicates the state of manual occupancy | |
OC_UNOCCUPIED | 1 |
| control (schedule override). It has priority over the time program | |
OC_BYPASS | 2 |
| (nviTodEvent). When the BYPASS mode is set, the bypass time is | |
OC_STANDBY | 3 |
| active. When the bypass time has elapsed, the master controller | |
OC_NUL | 255 |
| automatically sets nviManOccCmd to OC_NUL. nviManOccCmd | |
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| does not provide a failure detect mechanism in case no periodic | |
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| update is received. | |
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| MODE_ENABLE and | This input variable is used to disable the controller’s control | |
MODE_ENABLE | 0 | UNSUPPRESS_ALARMS | algorithms in order to manually set its physical outputs. The | |
MODE_DISABLE | 1 | (at application restart) | controller still responds to smoke purge even when disabled or set | |
MODE_MANUAL | 2 |
| to manual or factory test mode. It remains unchanged until another | |
SUPPRESS_ALARMS | 3 |
| mode has been commanded or an application restart has been | |
UNSUPPRESS_ALARMS | 4 |
| performed. | |
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| • MODE_ENABLE: starts the control algorithm at an initial state | |
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| after MODE_DISABLE or MODE_MANUAL. | |
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| • MODE_DISABLE: all outputs switched OFF, the alarm | |
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| ALARM_NODE_OFF is issued. | |
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| • MODE_MANUAL: all control loops are disabled and the alarm | |
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| ALARM_NODE_OFF is issued. The outputs can be controlled | |
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| manually via the nviTest command | |
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| • SUPPRESS_ALARMS: nvoAlarm is not sent and | |
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| nvoAlarmStatus and nvoAlarmLog are not updated until | |
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| UNSUPPRESS_ALARMS is set or an application restart. | |
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| • UNSUPPRESS_ALARMS: releases alarm suppression after | |
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| SUPPRESS_ALARMS. | |
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| 48 |
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