5–58 369 MOTOR MANAGEMENT RELAY – QUICKSTART GUIDE
OVERVIEW CHAPTER 5: PRODUCT DESCRIPTION
5.1.2 Protection Features
ANSI/IEEE
DEVICE
PROTECTION FEATURES OPTION TRIP ALARM BLOCK
START
14 Speed Switch •
27 Undervoltage M • • •
37 Undercurrent / Underpower /M • •
38 Bearing RTD R or RRTD • •
46 Current Unbalance • •
47 Voltage Phase Reversal M •
49 Stator RTD R or RRTD • •
50 Short Circuit & Backup •
50G/51G
Ground Fault & Ground Fault
Backup
••
51 Overload • • •
55 Power Factor M • •
59 Overvoltage M • •
66
Starts per Hour/Time
Between Starts
•
74 Alarm •
81 Over/Under Frequency M • •
86 Lockout •
87 Differential Switch •
General Switch • •
Reactive Power M • •
Thermal Capacity •
Start Inhibit (thermal capacity
available)
•
Restart Block (Backspin
Timer)
•
Mechanical Jam • •
Acceleration Timer •
Ambient RTD R or RRTD • •
Short/Low temp RTD R or RRTD •
Broken/Open RTD R or RRTD •
Loss of RRTD
Communications
RRTD •
Trip Counter •
Self Test/Service •
Backspin Detection B •
Current Demand •
kW Demand M •
kvar Demand M •
kVA Demand M •
Starter Failure •
Reverse Power M •
Undervoltage Autorestart M or B