ABB DPU 1500R Instruction Book page 80

ABB Distribution Protection Unit 1500R
Programmable Inputs
Table 6-1: Logical Input Definitions
Abbreviation
——: Entry not used.
TCM: Trip Coil Monitoring. Assign this to the physical input IN7 or IN8 only to monitor continuity of
(TCS)
GRD:
(IN)
PH3:
(3I)
50-1:
(I>>1)
50-2:
(I>>2)
50-3:
(I>>3)
ALT1:
ALT2:
ZSC:
SCC:
79S:
(O->I1)
6-2
Description
the circuit breaker coil. See Figure 6-2 for typical trip coil monitoring connections. When
input is a logical 1, TCM logic assumes breaker coil continuity. If a logical 0, breaker coil is
failed and logical output TCFA (trip circuit failure alarm) is asserted. TCM is only functional
when the DPU1500R determines that the breaker is closed. In the MDT mode it is necessary
to control the breaker through the DPU1500R since 52a and 52b are ignored and the only
way the logic can determine the breaker state is by trip and close signals issued. TCM
defaults to a logical 1 (breaker coil healthy) if not assigned to a physical input or feedback
term.
Enables 51N/50N-1/50N-2. Use to supervise (torque control) all ground overcurrent protection
except 50N-3. When the GRD input is a logical 1, all ground overcurrent protection except
50N-3 is enabled. GRD defaults to a logical 1 (enabled) if not assigned to a physical input or
feedback term.
Enables 51P/50P-1/50P-2. Use to supervise (torque control) all phase overcurrent protection
except 50P-3. When the PH3 input is a logical 1, all phase overcurrent protection except
50P-3 is enabled. PH3 defaults to a logical 1 (enabled) if not assigned to a physical input or
feedback term.
Enables 50P-1 & 50N-1. Use to supervise (torque control) phase and ground instantaneous
overcurrent protection level 1. When the 50-1 input is a logical 1, phase and ground
instantaneous overcurrent protection level 1 is enabled. 50-1 defaults to a logical 1 (enabled)
if not assigned to a physical input or feedback term.
Enables 50P-2 & 50N-2. Use to supervise (torque control) phase and ground instantaneous
overcurrent protection level 2. When the 50-2 input is a logical 1, phase and ground
instantaneous overcurrent protection level 2 is enabled. 50-2 defaults to a logical 1 (enabled)
if not assigned to a physical input or feedback term.
Enables 50P-3 & 50N-3. Use to supervise (torque control) phase and ground instantaneous
overcurrent protection level 3. When the 50-3 input is a logical 1, phase and ground
instantaneous overcurrent protection level 3 is enabled. 50-3 defaults to a logical 1 (enabled)
if not assigned to a physical input or feedback term.
Enables Alternate 1 Settings. When ALT1 is a logical high the Alternate 1 settings are placed
into service if Alternate 1 Setting is set to "Enable" in configuration settings. ALT1 defaults
to a logical 0 (alternate 1 settings not active) if not assigned to a physical input or feedback
term.
Enables Alternate 2 Settings. When ALT2 is a logical high the Alternate 2 settings are placed
into service if Alternate 2 Setting is set to "Enable" in configuration settings. ALT2 defaults
to a logical 0 (alternate 2 settings not active) if not assigned to a physical input or feedback
term.
Enables Zone Sequence Coordination scheme. Allows external supervision of the Zone
Sequence scheme. When the ZSC input is a logical 1, zone sequence is enabled. ZSC
defaults to a logical 1 (enabled) if not assigned to a physical input or feedback term. See the
Section 13 for details on Zone Sequence Coordination.
Spring Charging Contact. Connect SCC to a physical input to monitor a recloser spring. If the
SCC input is a logical 1, a "Spring Charging" event is logged in the operations record. SCC
defaults to a logical 0 (no spring charge event) when not assigned to a physical input or
feedback term. SCC only functions when the DPU1500R determines a breaker open state.
Single Shot Reclosing. Enables a single shot of reclosing when the DPU1500R determines
that an external device has opened the circuit breaker. When 79S is a logical 1, single shot
reclosing is enabled. 79S defaults to a logical 0 (disabled) when not assigned to a physical
input or feedback term. See Section 1 under "Reclosing" for more details.
website:www.abb.com/papd Programmable Input and Output Contacts
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