3.4.13 STRB
Introduction
In the OfficeCom and OfficePoint, the STRB control relay board connects actuators and sensors for monitoring, alerting, and controlling in OfficeCom and OfficePoint.
Actuators are relays that can be energized from any station by means of a code (such as a door opener). Sensors (such as thermostats or motion detectors) can detect a change of status in the connected equipment and activate a feature or dial a station number stored in the system. The STRB has four double-pole, double-throw relays as shown in Figure 3-105 on page 3-212.
The board has a total of 4 outputs (in the form of 2 floating switch contacts each) for externally activating an electrically isolated normally open (NO) contact. It also has 4 control inputs in the form of optocouplers. A diode is required to isolate the contact from the external power supply.
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Caution CDBase data is stored on the board. When replacing the board, be sure to store the CDBase data elsewhere. If a used board is used, old data may still be present on the board. Only factory technicians should use the Reset options procedure (code 29-3-3 in expert mode). Using the procedure during operation returns all options to their factory defaults, and they must be reset before they can accept data again from the CBPC. |
Application
You can route the +12 V signal for power failure alert to the control input of the optocoupler for connector X4 or X6. Route the signal through a normally open (NO) contact that is electrically isolated from the external device, then program the alert type.
For safety, the control voltage for the optocoupler is electrically isolated from the system's other partial voltages.
For the manual relay on/off function and door opener, you must enter the desired switching time (expert mode code 26 2).
Interfaces
Figure 3-104 STRB Interfaces (S30817-Q932-M)
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Control Relay Connection Values
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Attention The STRB interface is a SELV (Safety Extra-Low Voltage Circuit) interface, as defined by IEC 60950. Do not connect any circuits whose voltages exceed the following limit values: Maximum of 30 VAC (42 Vpeak) or 60 VDC. |
STRB Board Relay and Sensor Functions
Figure 3-105 STRB Board Relay and Sensor Functions
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Interface Assignments
Table 3-86 STRB Board Interface Assignments (Sheet 1 of 2)
Connector |
Pin |
Signal Name |
Function |
X3 |
1 |
K 4.21 |
Relay contact (common) |
2 |
K 4.22 |
Relay contact (NO) |
3 |
K 4.23 |
Relay contact (NC) |
4 |
K 3.21 |
Relay contact (common) |
5 |
K 3.22 |
Relay contact (NO) |
6 |
K 3.23 |
Relay contact (NC) |
7 |
K 2.21 |
Relay contact (common) |
8 |
K 2.22 |
Relay contact (NO) |
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X4 |
1 |
K 2.23 |
Relay contact (NC) |
2 |
K 1.21 |
Relay contact (common) |
3 |
K 1.22 |
Relay contact (NO) |
4 |
K 1.23 |
Relay contact (NC) |
5 |
+12VI |
+12 V control voltage optocoupler |
6 |
OPTKP 2 |
Control input optocoupler 2 |
7 |
+12VI |
+12 V control voltage optocoupler |
8 |
OPTKP 1 |
Control input optocoupler 1 |
Note for U.S. only: Pinouts shown are at the board itself. The supplied main distribution frame cable (MDF cable) reverses the signals from pins:
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1 and 2 |
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3 and 4 |
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5 and 6 |
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7 and 8 |
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X5 |
1 |
K 3.12 |
Relay contact (NO) |
2 |
K 3.13 |
Relay contact (NC) |
3 |
K 2.11 |
Relay contact (common) |
4 |
K 2.12 |
Relay contact (NO) |
5 |
K 2.13 |
Relay contact (NC) |
6 |
K 1.11 |
Relay contact (common) |
7 |
K 1.12 |
Relay contact (NO) |
8 |
K 1.13 |
Relay contact (NC) |
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X6 |
1 |
OPTKP 3 |
Control input optocoupler 3 |
2 |
+12VI |
+12V control voltage optocoupler |
3 |
OPTKP 4 |
Control input optocoupler 4 |
4 |
+12VI |
+12V control voltage optocoupler |
5 |
K 4.11 |
Relay contact (common) |
6 |
K 4.12 |
Relay contact (NO) |
7 |
K 4.13 |
Relay contact (NC) |
8 |
K 3.11 |
Relay contact (common) |
Note for U.S. only: Pinouts shown are at the board itself. The supplied main distribution frame cable (MDF cable) reverses the signals from pins:
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1 and 2 |
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3 and 4 |
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5 and 6 |
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7 and 8 |
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