TRIP UNIT
ཌቄڇᇮ
2.1-04
ևݴ!
Mpro
!ۉጱྃ੩ഗದᆶ!3!߲ीۉഗLjݴದྺᅜ
ူࠀీǖ
..!HG!Ԓয়
..!ࡗۉୁཌቄ!)HGĂJOTUĂMUĂTU*
..!ሎཚీଉ၌ԍࢺ
..!ԍࢺीۉഗ
..!ۉୁԒয়!2
..!ۉୁԒয়!3
..!ኟጒༀ
ۉጱྃ੩ഗՂႷഔᆩ༬ۨڦၜDŽසՂႷ٪ሞժഔᆩԍࢺ
ीۉഗLjᅜՍࠀీഔۯीۉഗDžă
أฉຎࢅྔLjNqsp!႙ࡽ!O!ۉጱྃ੩ഗ࣏ᅜٗ
ྔևۉუۙবഗথăᆶۉጱྃ੩ഗᆩ!
,35!
WED੦ۉᇸă
DŽጀǖྔև!,35!WED!੦ۉᇸᆩᇀཚ႑ăDž
ᆶ႙ࡽڦۉጱྃ੩ഗۼਏԢᇑୟഗాޤዺਸ࠲ڦ
থLjਸ࠲ߌኪୟഗ࿋ዃă
2.1.4.1
!ཚ႑
ྔև!,35!WED!੦ۉᇸᆩᇀཚ႑ă
S
!႙ࢅ!
N
!႙!
Mpro
!ۉ
ጱྃ੩ഗᅜስኧNpecvt!ཚ႑ၹᅱă
Modbus
!থথڟୟഗۥևڦದ၍ዕ܋ăᆶాև!
Modbus
!থۼঢ়ࡗۉጱྃ੩ഗۥևথഗLjথഗᇑ
ୟഗऐॐฉڦ֭ፗದă
2.1.4.1.1 Modbus
ۉጱྃ੩ഗྜඇޙࢇ!Npecvt!ၹᅱăᆶ࠲!Npecvt!ၹᅱ
ڦၘဦ႑တLj൩֖ለ!Npecvt!ၹᅱࡀݔă
ኧଇ၍!Npecvt!596ă૾থዷऐᅜሞ411Ă711Ă
2311Ă3511Ă5911Ă:711!ई2:311!հ༬୲ཉॲူሏႜă
2.1.5
!ࡗۉୁԍࢺࠀీ
Mpro
!ۉጱྃ੩ഗਏᆶᅜူࡗۉୁԍࢺࠀీǖ
..!้क़DŽࡗሜۉୁԍࢺDžMU
..!܌้क़DŽ܌ୟۉୁჽ้ԍࢺDžTU
..!ຨ้
DŽڦ܌ୟۉୁԍࢺDžJ
Some Mpro Trip Units have two output relays that can be
assigned to the following func
Ɵ
ons:
-- GF Alarm
-- Over-current trip (GF, INST, LT, ST)
-- Reduced Instantaneous (RELT) Ac
Ɵ
ve
-- Protec
Ɵ
ve Relays
-- Current Alarm 1
-- Current Alarm 2
-- Health status
The trip units must have the speci
Į
c op
Ɵ
on enabled (as an
example protec
Ɵ
ve relay must be present and enabled in order
to allow the func
Ɵ
on to actuate the relay).
n addi
Ɵ
on to the in- and outputs indicated above the Mpro type
N Trip Units also can receive inputs from external voltage
condi
Ɵ
oners. All Trip Units can be op
Ɵ
onally supplied by a +24
VDC control power supply.
(Note: ex24 VDC control power is required for
communica
Ɵ
on.)
All trip unit types have a connec
Ɵ
on to an auxiliary switch within
the breaker that senses the breaker’s posi
Ɵ
on.
2.1.4.1 COMMUNICATIONS
Ex24 VDC control power is required for communica
Ɵ
ons.
Mpro Trip Units of the S and N type can op
Ɵ
onally support
Modbus communica
Ɵ
on protocol. In addi
Ɵ
on,
Modbus connec
Ɵ
ons are made directly to wiring termina
Ɵ
ons
located at the circuit breaker top. Internally all Modbus
connec
Ɵ
ons are ran through the trip unit’s top connectors,
which mate with a receptacle on the breaker frame.
The Trip Units are fully compliant with Modbus Protocol. Full
details of the Modbus protocol can be found in the Modbus
Protocol Speci
Į
ca
Ɵ
on.
Two wire Modbus 485 is supported.
The link Host may operate at a 300, 600, 1200, 2400, 4800, 9600
or 19200-baud rate.
2.1.4.1.1 Modbus
The Mpro Trip Units can provide the following over current
protec
Ɵ
ons:
-- Long Time (Protec
Ɵ
on against Overload currents) LT
-- Short Time (Time delayed Protec
Ɵ
on against Short circuit
currents) ST
-- Instantaneous
(Op
Ɵ
onal Protec
Ɵ
on against Short circuit currents) I
2.1.5 OVER CURRENT PROTECTION func
Ɵ
ons
2
.
1
ׂ
NF1:ဣଚگუഘୟഗ
