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Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 249
Issue Number: 1
Input 1 (D12) = On (1) then it is closed (Brake released). The contact has 3 s to operate before a Trip 72 (Brk con 1 open) / Trip 73 (Brk con 1 closd)
is called.
When set to 2, brake contact 1 and 2 monitoring is enabled, where Brake Contact Monitoring Input 1 (D12) and Brake Contact Monitoring Input 2
(D13) are monitored to determine the state of the contactor. It is assumed that if a brake contact monitoring parameter = Off (0) the contact is open
(brake applied), and if it = On (1) then it is closed (brake released). The contact has Brake Contact Monitoring Time (D14) seconds to operate before
a Trip 72 (Brk con 1 open) / Trip 73 (Brk con 1 closd) is called for brake contact 1 or for brake contact 2 Trip 74 (Brk con 2 open) / Trip 75 (Brk con
2 closd) is called.
A brake contact fault is determined by comparing Brake Control Output (D03) to Brake Contact Monitoring Input 1 (D12) and Brake Contact
Monitoring Input 2 (D13). If Brake Control Output (D03) is not equal to Brake Contact Monitoring Input 1 (D12) or Brake Contact Monitoring Input 2
(D13) for more than Brake Contact Monitoring Time (D14) seconds then Trip 72 (Brk con 1 open) / Trip 73 (Brk con 1 closd) and Trip 74 (Brk con 2
open) / Trip 75 (Brk con 2 closd) will be called if Brake Contact Monitoring Select (D11) >0.
When Brake Contact Monitoring Select (D11)
= 1 or 2, then this parameter is used to monitor the
state of the brake contact 1. One of the elevator
drive inputs or I/O option inputs must be routed to this parameter, where the signal to activate the input comes from a brake auxiliary contact.
When set to Off (0), the brake contact is open, when set to On (1) the brake contact is closed.
This input is used to generate Trip 72 (Brk con 1 open) / Trip 73 (Brk con 1 closd).
When Brake Contact Monitoring Select (D11) = 2, then this parameter is used to monitor the state of the brake contact 2. One of the elevator drive
inputs or I/O option inputs must be routed to this parameter, where the signal to activate the input comes from a brake auxiliary contact.
When set to Off (0), the brake contact is open, when set to On (1) the brake contact is closed.
This input is used to generate Trip 74 (Brk con 2 open) / Trip 75 (Brk con 2 closd).
When Brake Contact Monitoring Select (D11) = 1 or 2, then this parameter is used to set the time delay before a brake contact monitoring trip is
generated. This affects Trip 72 (Brk con 1 open) / Trip 73 (Brk con 1 closd) and Trip 74 (Brk con 2 open) / Trip 75 (Brk con 2 closd).
A thermal protection system is provided for the braking resistor. If Braking Resistor Rated Power (D15) is set to zero this protection system is disabled
and the Braking Resistor Thermal Accumulator (D17) is held at zero. If braking resistor thermal protection is required the Braking Resistor Rated
Power (D15), Braking Resistor Thermal Time Constant (D16) and Braking Resistor Resistance (D18) should be set up with the braking resistor
parameters. The thermal time constant of the resistor can be calculated from the single pulse energy rating (E) and continuous power rating (P) of the
D12 Brake Contact Monitoring Input 1
Mode Open Loop, RFC-A, RFC-S
Minimum 0 Maximum 1
Default 0 Units
Type 1 Bit User Save Update Rate 4 ms
Display Format Standard Decimal Places 0
Coding RW
D13 Brake Contact Monitoring Input 2
Mode Open Loop, RFC-A, RFC-S
Minimum 0 Maximum 1
Default 0 Units
Type 1 Bit User Save Update Rate 4 ms
Display Format Standard Decimal Places 0
Coding RW
D14 Brake Contact Monitoring Time
Mode Open Loop
Minimum 1.0 Maximum 10.0
Default 3.0 Units
Type 8 Bit User Save Update Rate Background
Display Format Standard Decimal Places 1
Coding RW, BU
D15 Braking Resistor Rated Power
Mode Open Loop, RFC-A, RFC-S
Minimum 0.000 Maximum 99999.999
Default 0.000 Units kW
Type 32 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 3
Coding RW
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