Technical data, application notes, wiring
PS9031-4820-0001
21
1.0
4.15
Front side and operating elements
17: Front PS9031-4820-0001
Supply voltage terminals (quick-connect spring-loaded terminals)
Designation (A)
Description
+
Positive supply voltage terminal (2x)
-
Negative (back) supply voltage terminal (2x)
Chassis ground terminal (quick-connect spring-loaded terminal)
Designation (B)
Description
chassis ground
The connection of the chassis to the ground (earth) is optional and is only necessary for certain applications.
Signal connection (4-pin connector with screw connection)
Designation (C)
Description
6 +
7 Active
8 Ready
9 Inhibit
- "+" – positive switching output
- "Active" signal, for details see chapter
Active signal [
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18]
- "Ready" signal, for details see chapter
Ready signal [
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18]
- "Inhibit" input, for details see chapter
Inhibit input [
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18]
Status LED
Designation (D)
Description
LED green
This green LED shows the following information:
- OFF: capacitors are discharged or the supply voltage is lower than 44 V.
- ON: capacitors are fully charged
- Slow flashing (1.25 Hz): capacitors are being charged.
- Fast flashing (10 Hz): the capacitors are discharging.
Backup threshold value jumper
Designation (E)
Description
Backup
threshold
- Option 1: Fixed mode (jumper in position 2-3); the device switches to buffer mode as soon as the voltage
drops below 45 V.
- Option 2: Variable mode (jumper in position 1-2): the device switches to buffer mode when the input voltage
drops by 2 V. Voltage changes slower than 1.1 V/s are ignored if the voltage is above 45 V. Buffering begins
immediately below 45 V.
For further details, refer also to the chapter
Selection of the backup threshold voltage [
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14]
