GE Power Management
469 Motor Management Relay
1-5
1 INTRODUCTION
1.2 SPECIFICATIONS
1
1.2 SPECIFICATIONS
1.2.1 469 SPECIFICATIONS
POWER SUPPLY
Options:
LO / HI (must be specified with order)
Range:
LO:
DC: 20 to 60 V DC
AC: 20 to 48 V AC at 48 to 62 Hz
HI:
DC: 90 to 300 V DC
AC: 70 to 265 V AC at 48 to 62 Hz
Power:
45 VA (max), 25 VA typical
Proper operation time without supply voltage: 30 ms
PHASE CURRENT INPUTS
CT Primary:
1 to 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 to 20
×
CT
Accuracy:
at < 2 x CT: ± 0.5% of 2
×
CT
at
≥
2 x CT: ± 1% of 20
×
CT
CT Withstand:
1 second @ 80
×
rated current
2 seconds @ 40
×
rated current
continuous @ 3
×
rated current
GROUND CURRENT INPUTS
CT Primary:
1 to 5000 A
CT Secondary:
1 A or 5 A (setpoint)
Burden:
< 0.2 VA at rated load for 1 A or 5 A
< 0.25 VA for 50:0.025 @ 25 A
Conversion Range: 0.02 to 1
×
CT primary Amps
Accuracy:
± 0.5% of 1
×
CT for 5 A
± 0.5% of 5
×
CT for 1 A
± 0.125 A for 50:0.025
CT Withstand:
1 second @ 80
×
rated current
2 seconds @ 40
×
rated current
continuous @ 3
×
rated current
DIFFERENTIAL PHASE CURRENT INPUTS
CT Primary:
1 to 5000A
CT Secondary:
1 A or 5 A (setpoint)
Burden:
Less than 0.2 VA at rated load
Conversion Range: 0.02 to 1
×
CT
Accuracy:
±0.5% of 1
×
CT for 5 A
±0.5% of 5
×
CT for 1 A
CT Withstand:
1 second @ 80
×
rated current
2 seconds @ 40
×
rated current
continuous @ 3
×
rated current
VOLTAGE INPUTS
VT Ratio:
1.00 to 150.00:1 in steps of 0.01
VT Secondary:
273 V AC (full scale)
Conversion Range: 0.05 to 1.00
×
full scale
Accuracy:
±0.5% of full scale
Max. Continuous: 280 V AC
Burden:
> 500 k
Ω
DIGITAL INPUTS
Inputs:
9 opto-isolated inputs
External Switch: dry contact < 800
Ω
, or
open collector NPN transistor from sen-
sor; 6 mA sinking from internal 4 K
Ω
pull-
up at 24 V DC with Vce < 4 V DC
469 Sensor Supply: +24 V DC at 20 mA max.
RTD INPUTS
RTDs: 3 wire type:100
Ω
Platinum (DIN.43760)
100
Ω
Nickel
120
Ω
Nickel
10
Ω
Copper
RTD Sensing Current: 5mA
Isolation:
36 Vpk
(isolated with analog inputs and outputs)
Range:
–50 to +250°C
Accuracy:
±2°C
Lead Resistance: 25
Ω
Max per lead for Pt and Ni type
3
Ω
Max per lead for Cu type
No Sensor:
>1000
Ω
Short/Low Alarm: < –50°C
TRIP COIL SUPERVISION
Applicable Voltage: 20 to 300 V DC / V AC
Trickle Current:
2 to 5 mA
ANALOG CURRENT INPUTS
Current Inputs:
0 to 1 mA, 0 to 20mA or 4 to 20 mA
(setpoint)
Input Impedance: 226
Ω
±10%
Conversion Range: 0 to 21 mA
Accuracy:
±1% of full scale
Type:
passive
Analog Input Supply: +24 V DC at 100 mA max.
Response Time:
≤
100 ms
COMMUNICATIONS PORTS
RS232 Port:
1, Front Panel, non-isolated
RS485 Ports:
2, Isolated together @ 36 V
pk
Baud Rates:
RS485: 300, 1200, 2400, 4800, 9600,
19200
RS232: 9600
Parity:
None, Odd, Even
Protocol:
Modbus
®
RTU / half duplex
Содержание MOTOR MANAGEMENT RELAY 469
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