Multilin SR469 Instruction Manual Download Page 11

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SR469 SPECIFICATIONS 1.

INTRODUCTION

1-4

1.3

SR469 SPECIFICATIONS

POWER SUPPLY

Options:

LO / HI (must be specified when ordering)

Range:

LO:

DC: 20 to 60 Vdc
AC: 20 to 48 Vac @ 48 to 62 Hz

HI:

DC: 90 to 300 Vdc
AC: 70 to 265 Vac @ 48 to 62 Hz

Power:

45 VA (max), 25VA typical

Proper operation time without supply voltage: 30 ms

PHASE CURRENT INPUTS

CT Primary:

1-5000 A

CT Secondary:

1 A or 5 A (must be specified with order)

Burden:

Less than 0.2 VA at rated load

Conversion Range:

0.05-20 x CT

Accuracy:

at < 2 x CT: ± 0.5% of 2 x CT
at

≥

2 x CT: ± 1% of 20 x CT

CT Withstand:

1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current

GROUND CURRENT INPUTS

CT Primary:

1-5000 A

CT Secondary:

1 A or 5 A (setpoint)

Burden:

Less than 0.2 VA at rated load for 1A or 5A
Less than 0.25 VA for 50:0.025 @ 25A

Conversion Range:

0.02-1 x CT primary Amps

Accuracy:

± 0.5% of 1xCT for 5A
± 0.5% of 5xCT for 1A
± 0.125 A for 50:0.025

CT Withstand:

1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current

DIFFERENTIAL PHASE CURRENT INPUTS

CT Primary:

1-5000A

CT Secondary:

1 A or 5 A (setpoint)

Burden:

Less than 0.2 VA at rated load

Conversion Range:

0.02-1 x CT

Accuracy:

± 0.5% of 1xCT for 5A
± 0.5% of 5xCT for 1A

CT Withstand:

1 second @ 80 times rated current
2 seconds @ 40 times rated current
continuous @ 3 times rated current

VOLTAGE INPUTS

VT Ratio:

1.00-150.00:1 in steps of 0.01

VT Secondary:

273 Vac (Full Scale)

Conversion Range:

0.05-1.00 x Full Scale

Accuracy:

± 0.5% of Full Scale

Max. Continuous:

280 Vac

Burden:

> 500 k

Ω

DIGITAL INPUTS

Inputs:

9 opto-isolated inputs

External Switch:

dry contact < 800

Ω

, or

open collector NPN transistor from sensor
6 mA sinking from internal 4K

Ω

pullup @ 24Vdc

with Vce < 4Vdc

SR469 Sensor Supply: +24Vdc @ 20 mA Max.

RTD INPUTS

RTDs: 3 wire type

100

Ω

Platinum (DIN.43760)

100

Ω

Nickel

120

Ω

Nickel

Ω

Copper

RTD Sensing Current: 5mA
Isolation:

36 Vpk (Isolated with Analog Inputs and Outputs)

Range:

-50 to +250

Accuracy:

± 2

Lead Resistance:

Ω

Max per lead for Pt and Ni type

Ω

Max per lead for Cu type

No Sensor:

>1000

Ω

Short/Low Alarm:

< -50

TRIP COIL SUPERVISION

Applicable Voltage:

20-300 Vdc / Vac

Trickle Current:

2-5mA

ANALOG CURRENT INPUTS

Current Inputs:

0-1 mA, 0-20mA or 4-20 mA (setpoint)

Input Impedance:

226

Ω

+/-10%

Conversion Range:

0-21 mA

Accuracy:

+/- 1% of full scale

Type:

passive

Analog Input Supply:

+24VDC @ 100mA max.

Response Time:

≤

100 ms

COMMUNICATIONS PORTS

RS232 Port:

1, Front Panel, non-isolated

RS485 Ports:

2, Isolated together @ 36Vpk

Baud Rates:

RS485: 300,1200,2400,4800,9600,19200
RS232: 9600

Parity:

None, Odd, Even

Protocol:

Modbus



RTU / half duplex

ANALOG CURRENT OUTPUT

Type:

Active

Range:

4-20 mA, 0-1 mA (must be specified with order)

Accuracy:

+/- 1% of full scale

4-20 mA maximum load:1200

Ω

0-1mA maximum load: 10 k

Ω

Isolation:

36 Vpk (Isolated with RTDs and Analog Inputs)

4 Assignable Outputs:

phase A current
phase B current
phase C current
3 phase average current

ground

current

phase AN (AB) voltage
phase BN (BC) voltage

phase CN (CA) voltage
3 phase average voltage
hottest stator RTD
hottest bearing RTD
hottest other RTD
RTD # 1-12
Power factor
3 phase Real power (kW)
3 phase Apparent power (kVA)
3 phase Reactive power (kvar)
Thermal Capacity Used
Relay Lockout Time
Current Demand
kvar Demand
kW Demand
kVA Demand
Motor Load
Torque