The minimum green time 1 (tg min1) can be regarded as a redundant minimum time to the device minimum. To ensure that vs | plus does not issue any on/off commands that are then corrected by the safety level of the control unit, the minimum green time 1 must be at least as long as the device minimum. The minimum green time 1 is protected by vs | plus under all circumstances. This means that it is given regardless of the frame signal. The minimum green time 1 is protected by vs | plus under all circumstances. This means that it is given independently of the frame signal.
Figure 55: Minimum green time 1
The minimum green time 2 (tg min2) is considered to be the minimum green time that makes sense from a traffic point of view (measured minimum green time). The green is maintained if the extension conditions (traffic present) are met. The minimum green time 2 is given regardless of the frame signal.
Figure 56: Minimum green time 2
The maximum green time 1 is the first reduction level below the maximum green time 2. Hostile traffic streams whose control time 1 has been reached can cancel traffic streams after tg max 1.
Figure 57: Maximum green time 1
If a traffic stream reaches the maximum green time 2 and a not conflicting traffic stream is waiting to be switched on, it is cancelled even if its frame signal end has not yet been reached. The maximum green time 2 (tg max2) corresponds to the traffic-related maximum according to the power calculation. If all loops are permanently occupied, there must be a turnaround time in compliance with the tg max2 of all traffic streams, which must fulfil the underlying load (100% capacity utilisation).
Figure 58: Maximum green time 2
The "max. green detector fault" becomes effective as soon as a detector is recognised as faulty. The other green times, which are greater than "max. green detector fault", cannot be reached in this case (see detector fault).
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Display |
Identifier |
Values |
Description |
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TG MIN1 |
Minimum green time 1 |
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The minimum green time 1 (tg min1) can be regarded as a redundant minimum time to the device minimum. To ensure that vs | plus does not issue any on / off commands that are then corrected by the safety level of the control unit, the minimum green time 1 must be at least as large as the device minimum. The minimum green time 1 is protected by vs | plus under all circumstances. That is, it is given independently of the frame signal. The minimum green time 1 is protected by vs | plus under all circumstances. This means that it is given independently of the frame signal. |
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0 .. 3276 |
Green time |
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TG MIN2 |
Minimum green time 2 |
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The minimum green time 2 (tg min2) is considered to be the minimum green that is reasonable for traffic (rated minimum green time). The green is held provided that the extension conditions (traffic present) are met. The minimum green time 2 is given regardless of the frame signal. The minimum green time 2 (tg min2) is given independently of the frame signal. |
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0 .. 3276 |
Green time |
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TG MAX1 |
Maximum green time 1 |
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Maximum green time 1 is the first reduction level below maximum green time 2. Conflicting traffic streams whose control time 1 is reached can cancel traffic streams after tg max 1. |
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0 .. 3276 |
Green time |
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TG MAX2 |
Maximum green time 2 |
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If a traffic stream reaches the maximum green time 2 and a conflicting traffic stream is waiting to switch on, it is aborted even if its frame signal end has not yet been reached. The maximum green time 2 (tg max2) corresponds to the traffic maximum according to the power calculation. If all loops are permanently occupied, there must be a circulation time in compliance with the tg max2 of all traffic streams, which must meet the underlying load (utilization 100%). If a traffic stream reaches the maximum green time 2 and a conflicting traffic stream is waiting to switch on, it is aborted even if its frame signal end has not yet been reached. |
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Duration |
As long as the traffic stream has traffic and the frame signal extension is present, the maximum green time will never be reached. |
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0 .. 3276 |
Green time |
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tg_maxFail |
Added green time |
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The "max. green time detector fault" becomes effective as soon as a detector is detected as faulty. The other green times, which are greater than "max. green time detector fault" cannot be achieved in this case. |
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0 .. 900 |
Green time |