Honeywell NOTIFIER SCS Series User Manual

38 SCS Series Manual — P/N 15712:L 7/18/16
The SCS⁄SCE Preliminary SCS-8⁄SCE-8 Design Considerations
Usually a fan does not need the capability of separate verification of its on/off state (requiring two monitor modules). One monitor module is
capable of determining when the fan is on and when it is off.
3.4.5 Switch Group Type
Each controlled/monitored fan or damper has one associated switch group on the SCS⁄SCE. Each switch group has four EIA-485 protocol
points used to control and monitor a fan or damper. There are four stand-alone capabilities available for controlling and monitoring fans and
dampers for smoke control:
• The capability to turn a fan on (open a damper), regardless of its current state
• The capability to turn a fan off (close a damper), regardless of its current state
• Monitor and verify when the fan is on (or when damper is open)
• Monitor and verify when the fan is off (or when damper is closed)
If a fan or damper requires all four of these capabilities, then two control modules and two monitor modules must be connected to the device
and one protocol point would be responsible for each of the four capabilities. A control module is assigned either an ON⁄OPEN or an
OFF⁄CLOSED capability to control a fan or damper.
ON⁄OPEN Control (CON
ON⁄OP
) - turn a fan on (or open a damper)
OFF⁄CLOSED Control (CON
OFF⁄CL
) - turn a fan off (or close a damper)
A monitor module is assigned an ON⁄OPEN or an OFF⁄CLOSED capability for verification of the state of a fan or damper.
ON⁄OPEN Verification (VER
ON⁄OP
) - verify when a fan is on (or verify when a damper is open)
OFF⁄CLOSED Verification (VER
OFF⁄CL
) - verify when a fan is off (or verify when a damper is closed)
These four capabilities, now referred to as CON
ON⁄OP
, CON
OFF⁄CL
, VER
ON⁄OP
and VER
OFF⁄CL
, can be applied to the nine scenarios as
shown in Table 3.3. These nine combinations represent all the capabilities a fan or damper can have for smoke control. The capabilities of
each fan or damper must match one of these nine scenarios. Each scenario is referred to as a switch group type.
Example: If a fan must have the capability of on and off control, as well as verification of when the fan is on, you would
need switch group type 8.
3.4.6 Switch Group Type Configuration
Once the switch group types have been selected, they must be configured for the SCS⁄SCE. The configuration of switch group types will
determine the number of SCS⁄SCE modules required for the system. The configuration layouts must be selected from pre-chosen formats
shown in the tables in Section 3.8 “Configuration”. Although the configurations in these tables are shown with an SCE, the configuration is
the same for the SCS if an SCE is not used.
Table 3.3 FSCS Mode Switch Group Types
1 CON
OFF⁄CL
and VER
OFF⁄CL
Turn a fan off (close a damper) and verify when the fan is off (damper closed)
2 CON
OFF⁄CL
and VER
ON⁄OP
Turn a fan off (close a damper) and verify when the fan is on (damper open)
3 CON
OFF⁄CL
, VER
ON⁄OP
and
VER
OFF⁄CL
Turn a fan off (close a damper) and verify when the fan is on and off (damper open and closed)
4 CON
ON⁄OP
and VER
OFF⁄CL
Turn a fan on (open a damper) and verify when the fan is off (damper closed)
5 CON
ON⁄OP
and VER
ON⁄OP
Turn a fan on (open a damper) and verify when the fan is on (damper open)
6 CON
ON⁄OP
, VER
ON⁄OP
and
VER
OFF⁄CL
Turn a fan on (open a damper) and verify when the fan is on and off (damper open and closed)
7 CON
ON⁄OP
, CON
OFF⁄CL
and
VER
OFF⁄CL
Turn a fan on and off (open and close a damper) and verify when the fan is off (damper closed)
8 CON
ON⁄OP
, CON
OFF⁄CL
and
VER
ON⁄OP
Turn a fan on and off (open and close a damper) and verify when the fan is on (damper open)
9 CON
ON⁄OP
, CON
OFF⁄CL,
VER
ON⁄OP
and VER
OFF⁄CL
Turn a fan on and off (open and close a damper) and verify when the fan is on and off (damper open and closed)

Honeywell NOTIFIER SCS Series Specifications

General

Brand	Honeywell
Model	NOTIFIER SCS Series
Category	Control Unit
Language	English