Da-Lite SCB-200 Instruction Book - page 4
4
Installation
WARNING: This product possesses high voltage when
connected, and may present a shock hazard when the screen
cover is removed. Please disconnect power when installing
or servicing.
The SCB-200 is installed as a factory option when ordering
the compatible screen from Da-Lite. This is necessary because of
tight integration between the SCB-200 and sensors that are used
to detect the position of the screen at any time during operation.
The SCB-200 is factory calibrated based on the mechanical limit
switches in the screen motor. If it becomes necessary to adjust
the mechanical limit switches once the screen is installed, a
calibration procedure will be required to re-orient the SCB-200
to this adjustment. Contact Da-Lite technical support for more
information on this procedure.
Each SCB-200 may operate a single motor, and in the case of
multiple aspect ratio screens, which rely on multiple motors, or in
other specialized multi-screen applications, up to eight SCB-200
controllers may be ganged together in a Master / Slave
configuration for operation from a web browser or RS-232
controller..
The following terminal connections are available on the SCB-200:
Figure 1 - Serial / Bus / IR Connections
Terminal block 1 provides connections for RS-232 controllers,
such as the optional WC- 200 wall controller, or an integrated
third-party control system. RTS / CTS connections are not
supported or required for operation. Since there are two RS-232
ports on the SCB-200, two independent RS-232 controllers may
be used. Ports operate in the same fashion, and may be used
interchangeably. The port settings for both ports are fixed
configurations, and used the following parameters:
Terminal block 2 provides an RS-485 bus for connection
between the SCB-200 devices when used in a master / slave
configuration. When using multiple SCB-200 devices, a 2-
conductor 24AWG shielded cable is connected between the SCB-
200 devices. Wire 1 is connected between RS-485A and Wire 2 is
connected between RS-485B.
In the event that more than two SCB-200 devices are used, the
additional SCB-200 devices may be connected in a daisy-chain
fashion to the other SCB-200 devices.
PLEASE NOTE: When multiple SCB-200 devices are used, the
RS-232 ports and infrared ports on the MASTER SCB-200 are
operational, and the optional NET-200 may ONLY be installed
on the MASTER SCB-200. Ports on SCB-200 devices in SLAVE
configuration are defeated. In this mode, all communication
originates with the MASTER SCB-200 controller.
Terminal Block 1
1
RS-232 #1 TX
2
RS-232 #1 RX
3
RS-232 #1 GND
4
RS-232 #2 TX
5
RS-232 #2 RX
6 RS-232 #2 GND
Terminal Block 2
7 RS-485 A
8 RS-485 B
9 GND
10 IR In
11 +12vDC
12 GND
9600 Band
8 Bit
1 Stop Bit
No Parity
Full duplex mode
Flow Control = None