Emerson Unidrive SPM User Manual

Safety
Information
Introduction
Product
Information
System
configuration
Mechanical
Installation
Electrical
Installation
Getting
Started
Basic
parameters
Running
the motor
Optimization
SMARTCARD
operation
Onboard
PLC
Advanced
parameters
Technical
Data
Diagnostics
UL Listing
Information
72 Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
Table 6-11 Available resistors
If it is difficult to find a suitable resistor then a resistor with a higher P x R
product may have to be used.
The P x R product of the resistor should be larger than:
Table 6-12 Allowable Softstart resistor range
For multiple modules, divide the resistance by the number of modules.
For example the minimum resistance for 3 x SPMD1404 is 6.7Ω.
Figure 6-10 Example of resistor overload characteristic
Circuit Breaker
Protection for the softstart circuit must be provided. The recommended
protection is to use a miniature circuit breaker (MCB) having a thermal
magnetic trip. The thermal part of the tripping mechanism protects
against a high impedance short circuit and the magnetic part of the trip
protects the resistor against a direct short circuit.
Many different MCBs are possible, e.g.:
• GB2CB range from Telemecanique
• S 281-K range from ABB
Table 6-13 MCBs available from Control Techniques
Figure 6-11 Example of tripping characteristic
Resistor
value
Ω
Power
rating
W
Energy
rating
J
CT part
number
P x R
product
V
2
150 53 170 1270-3157 7950
48 148 1,700 1270-2483 7104
CT part number
Min. Resistance
Ω
Max. Resistance
Ω
SPMA14X1
SPMD14X1
30 300
SPMD12X1
SPMA14X2
SPMD14X2
24 240
SPMA16X1
SPMA16X2
SPMD16X1
SPMD16X2
105 1051
SPMD12X2
SPMD14X3
SPMD14X4
20 200
SPMD16X3
SPMD16X4
79 789
SPMD12X3
SPMD12X4
17 168
PR×
V
ll
2
10.9
-----------
=
10
1
0
12 5
10
Duration of Load (seconds)
% Multiples of rated Power
100
20 25 50 100
CT part
number
Rated current Rated voltage No of poles
4133-0117 0.3 480 1
4133-0217 1 480 1
4133-0277 2 480 1
0.01
0.02
0.04
0.06
0.1
0.2
0.4
0.6
1
2
4
6
10
20
40
1
2
4
6
10
20
40
60
120
1.5 2 3 41 56
8
10
15
20
30
14
21
10
Tripping time
Seconds Minutes
Multiple of rated current
Thermal Trip
Area
Hot
Cold
Magnetic Trip
Area

Emerson Unidrive SPM Specifications

General

Brand	Emerson
Model	Unidrive SPM
Category	Controller
Language	English