Emerson CORESENSE, Technical Information

Page: 1 / 17

D7.8.4/0112-0415/E 1/17
Date of last update: Apr-15 Ref: D7.8.4/0112-0415/E
Application Engineering Europe
C
ORE
S
ENSE
™ D
IAGNOSTICS FOR
S
TREAM
R
EFRIGERATION
C
OMPRESSORS
CoreSense
™
Diagnostics for Stream Refrigeration Compressors................................................................................ 1
1 Introduction .......................................................................................................................................................... 2
2 Specifications ........................................................................................................................................................ 2
3 CoreSense Diagnostics features ........................................................................................................................... 2
3.1 Insufficient oil pressure protection .............................................................................................................. 3
3.2 Motor overheat protection .......................................................................................................................... 3
3.3 High discharge temperature protection ....................................................................................................... 3
3.4 Locked rotor protection ................................................................................................................................ 4
3.5 Missing phase protection ............................................................................................................................. 4
3.6 Low voltage protection ................................................................................................................................. 4
3.7 Voltage imbalance protection ...................................................................................................................... 4
3.8 “Jog” feature ................................................................................................................................................. 5
3.9 Crankcase heater (CCH) control .................................................................................................................... 5
3.10 Flash memory information ........................................................................................................................... 5
3.11 Modbus® communication ............................................................................................................................. 6
3.12 Reset ............................................................................................................................................................. 7
3.13 Alarm history and running conditions .......................................................................................................... 7
3.14 Compressor status codes .............................................................................................................................. 7
3.15 LEDs on the module to display the failure alarms ........................................................................................ 7
3.16 Oil functionality self-test option ................................................................................................................... 9
4 Electrical connections ........................................................................................................................................... 9
4.1 System wiring diagram ................................................................................................................................. 9
4.2 Terminal box and current sensing transformer connections ..................................................................... 11
4.2.1 Installation of current sensing module ............................................................................................... 11
4.2.2 CoreSense Diagnostics with Υ/Δ motors ............................................................................................ 11
4.2.3 CoreSense Diagnostics with part winding .......................................................................................... 12
5 CoreSense Diagnostics jumper settings .............................................................................................................. 13
6 CoreSense Diagnostics DIP-switch settings ........................................................................................................ 14
7 Troubleshooting .................................................................................................................................................. 15