Black Box SW1046A handleiding
Handleiding
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Chapter 5: Operation
5. Operation
When power is applied to the A/B Switch, one of the LED switch position indicators (A or B) on the front of the
unit will illuminate to show the connection state of the switch. Indicator A lights when the switch is in position
A, and Indicator B lights when the switch is in position B. If neither or both LEDs are lit, then a fault has
occurred, or power has been removed.
5.1 Manual Switching
You can manually switch the A/B Switches using the push button switches located on the front of the unit. To
select the connection state, you must hold the appropriate push button switch for one second before the unit
will switch. This is to minimize the risk of inadvertently switching the A/B Switch.
5.2 Dry Contact Closure Switching
You can also switch connection states and monitor the status of the A/B Switch using the remote control
connections on the 6-position terminal block, located on the rear of the unit. Connecting (shorting) input A (pin
1) to Ground (pin 2) for a minimum of approximately 100 msec will cause the unit to switch to the A position,
and connecting (shorting) input B (pin 3) to Ground (pin 2) for a minimum of approximately 100 msec will cause
the unit to switch to the B position. If desired, the A or B control input can remain connected to the Ground
input, which will disable all other control interfaces including the front panel pushbutton switches from being
able to switch connection states of the A/B Switch.
NOTE: To ensure reliable operation, the external dry contacts and any associated cable connected to the
6-position terminal block should not exceed 100 ohms resistance. Once the A/B Switch has switched
connection states, the status relay contact pin 5 will be internally connected (shorted) to either pin 4
(switch in position A) or pin 6 (switch in position B). See Table 5-1 for the pin assignments on the 6-position
terminal block.
Table 5-1. 6-position terminal block pin assignments.
Pin
Number
Description
1 A control input
2 Ground
3 B control input
4 Status Relay A contact
5 Status Relay COMMON
6 Status Relay B contact
5.3 Serial RS-232 Switching (SW1046A)
A/B Switch models that support serial remote control can be switched using commands over a serial RS-232
communications line. The parameters of the A/B Switch console port are fixed at 9600 baud, no parity, 8 data
bits, and 1 stop bit (commonly abbreviated as 9600, 8, N, 1). To communicate with the A/B Switch, you will need
a serial terminal or similar device configured to these settings. Use a straight-through M/F cable to connect the
A/B Switch console connector to this terminal or other device that follows the standard IBM PC DB9 serial port
pinout. See Table 6-1 for the A/B Switch console port connector pin assignments.
When the A/B Switch powers up, it will send a sign-on message followed by a prompt character “>” to your
serial terminal device. After each command and the associated response, the A/B Switch will again issue a
prompt character. For systems where the console port is being commanded by software, the software should
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Productinformatie
| Merk | Black Box |
| Model | SW1046A |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3336 MB |
Caratteristiche Prodotto
| Kleur van het product | Zwart |
| Gewicht | 1800 g |
| Breedte | 159 mm |
| Diepte | 205.7 mm |
| Hoogte | 64 mm |
