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PC-0984-455 SCHNEIDER

Brand: Schneider

Model number:  PC-0984-455

Colour:new                  

Warranty: 12 months

Lead Time:3-day working day   

Country of origin: USA Price: Please contact us         

Product weight:0.40kg

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

PC-0984-455   SCHNEIDER    Central control module

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Products Name: PC-0984-455 SCHNEIDER

PRODUCT DESCRIPTION

When setting the relay characteristic/torque angle for the three phase directional overcurrent element, a positive angle setting was specified. This was due to the fact that we consider as polarising voltage, the phase voltage value in quadrature of the current under fault conditions. With directional earth fault protection, the residual current under fault conditions lies at an angle lagging the polarising residual earth fault voltage.

Description:

Primary and 

Standby System 

Unit Control 

Register 

(%SW60)

Schneider Electric recommends you become familiar with the Hot Standby control 

register.

Locate the "Invalidate keypad" bit, which is the LSB. The Invalidate Keypad bit (bit 

15) dictates the state of the "A-Controller", and bit 14 dictates the state of the "BController".

An additional screen menu, named Diag, appears on the controller’s LCD display 

screen. These menus describe the state of t5he controller.

The Diag field indicates whether the current CPU is in Run mode (plug&run) or not. 

If the current controller is not in RUN mode, the keypad displays the reason for the 

offline state: keypad and / or control register.

Additional 

Information 

about Using the 

Control Register

If the keypad LED displays a "Mode" field in the "Hot Standby" screen, that gives the 

intention emitted by the user through the keypad, concerning the Run/Offline (i.e. 

coupled/uncoupled) state of the current CPU in regard with the Hot Standby system.

In turn the Hot Standby Control Register (%SW60), through bits 15 and 14, permits 

an external host system to set the mode to either a Run or Offline state for the 

current CPU and/or the alternate CPU. These bit positions are accessible by the 

application program and / or an external system such as a SCADA system or a 

programming panel.

The intentions emitted by the Control Register bits always play their part in the final 

decision, concerning the Run/Offline state of the CPU units.

The intentions emitted by the keypad Mode selections (Run versus Offline) play their 

respective part in the final decision, concerning the Run/Offline state of the CPU 

units, provided the Keypad Disable bit position (LSB) in the HSBY Control 

Register.1. is in the False state ('0'). In these conditions, for a given CPU, either the 

Control Register bit position governing its Run/Offline CPUs State, and the Mode 

field value of the CPU's keypad, should ask for a 'Run', in order to get an effective 

'Run' state. 2.

2.When keypad becomes validated again, the keypad selections take effect 

immediately.1.The Standby's Control Register is updated on each scan cycle with 

the contents of the Primary's Control Register 1. 

LCD Display Screen 

Menu

Description

Diag: off keypad Offline mode selected using the keypad

Diag: off %sw60 Offline mode selected using the control register and possibly the 

keypad

Diag: plug&run Online mode selected using either the keypad or the control 

register

PC-L984-785   SCHNEIDER

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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