16) Split Drop Delay (SDD)
If the Alarm is reset while the curtain is at the Split Drop position, the curtain will retract without the
need to deploy fully first. This may require a manual reset depending on the setting entered in Step
15.
SDD is comprised of 3 settings:
To activate Split Drop Delay
Use the ↑ and ↓ buttons to navigate the menu and select ‘Split Drop Delay’ by pressing the OK
button.
Press the ↑ button to switch SDD on and the ↓ button to turn SDD off. Press the OK button to exit.
Set SDD Drop Time
Use the ↑ and ↓ buttons to navigate the menu and select ‘SDD Drop 1/10s’ by pressing the OK
button.
Use the ↑ and ↓ buttons to adjust the drop time. The drop time is adjustable by 1/10 of a second to
give fine adjustment. Press the OK button to exit.
Set SDD Pause Time
Use the ↑ and ↓ buttons to navigate the menu and select ‘SDD pause time’ by pressing the OK
button.
Use the ↑ and ↓ buttons to adjust the ‘pause’ time. Press the OK button to exit.
The required setting for the height and ‘pause’ time of SDD will generally be advised
within the fire strategy and will take into account variables such as the number of
occupants and pre-movement times. If no details have been provided, contact the Project
Manager.
17) Half Drop Delay (HDD)
HDD is not available with Double Knock.
HDD allows the curtain to deploy to a set height but unlike SDD, the curtain will remain in this
position until a second activation signal is received.
HDD is only available as Alarm as first activation signal, either Detector as the second
activation signal.
If the Alarm is reset while the curtain is at the Half Drop position, the curtain will retract without the
need to deploy fully first. This may require a manual reset depending on the setting entered in Step
15.
The SDD ‘On/Off’ setting does not affect the HDD function.
Use the ↑ and ↓ buttons to navigate the menu and select ‘Half Drop?’ by pressing the OK button.
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