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1582-42L RS422 Data Switch

  

The 1582-42L provides AUTO or Manual latched relay switching between CH1 and CH2 data signals. Alarm conditions on CH1 and CH2 are either a contact closure to ground or an open (selectable). Switching logic can be selected as follows:

1) CH1 Prime Mode - switches from CH1 to the CH2 only if CH1 alarms and CH2 is good. Switches back to CH1 when it is no longer in alarm or when both CH1 and CH2 are bad.
2) Latch to CH2 Mode - Switches to CH2 if CH1 alarms and CH2 is good. Latches to CH2. Push Manual Reset or ground Remote Reset pin to return to CH1 if no alarm.
3) Minimum AUTO switching, Initial Channel Select (ICS) Mode - Switch stays on channel last selected by Manual or Remote selection after return to AUTO. AUTO switching occurs only if current channel alarms and other channel clear.

On power loss and when power is applied (as alarms at power up dictate), the selected channel remains on. The Manual Select switch and (when in AUTO) contact closures to Remote Select pins, select CH1 or CH2 independent of alarms. LEDs indicate alarm and switch conditions for CH1 and CH2 and REMOTE or MANUAL operation. Redundant power supplies provided.
 


1582-42 Data Switch Front Panel

Equipment Specifications*
 

Data Characteristics  
Input/Output
Data Rate
Pins switched
RS422
15 MB/s max
1, 2, 4, 6, 7, 9
Switch Characteristics
Type
Isolation
Switch time
Contact resistance
Configuration		 Latching relay
>40 dB
<= 10ms
<=10 ohms, < 1 ohm typ.
DPDT
Controls/Indicators  
Manual Select
SWITCH RESET
HISTORY RESET
LEDs		 Manually select CH1, CH2
Resets switch to CH1 if good and in latch mode; Resets REMOTE
Resets alarm history (prior occurrence of alarms now cleared) LEDs only
CH1, CH2 ON; ALARM; ALARM HISTORY; POWER; MANUAL; REMOTE
Other
Connector, ALARM
Connector, Data
Mechanical
Power		 Barrier Strip
DB9, female
19" standard chassis; 1.75"H X 12"D
90-260 VAC, 47-60Hz, 30W; Redundant power supplies

*+10 to +40 degrees C; Specifications subject to change without notice