User manual
Table Of Contents
- POWER LIMITER
- CONTENT
- 1. DESCRIPTION AND OPERATION
- 1.1 APPLICATION
- 1.2 Technical Brief
- 1.2.1 Basic technical parameters are shown below in table 1.3
- 1.2.2 Measured and calculated parameters output to the display unit, their effective range limits and tolerances are given below in Table 1.4.
- 1.2.3 Programmable parameters and their variability ranges are shown below in table 1.5.
- 1.2.4 Operating controls and the dimensions of the ОМ-310 are shown in fig.1.1.
- 1.2.5 Power Limiting Functions
- 1.2.6 Protection functions
- 1.3 Product package contents
- 1.4 Equipment features and operation
- Current protection. Maximum current protection
- Load Engagement and Automatic Reset Control
- 2. INTENDED USE
- 2.1. SAFETY
- 2.2 ОМ-310 device control
- 2.3 OM-310 pre-operation procedure
- INTENDED USE
- 2.4.1 ОМ-310 operation before load relay closure
- 2.4.2 OM-310 operation before load relay closure
- 2.4.3 Characterizing relay operation
- 2.4.4 Work with RS-232/RS-485 interface under MODBUS protocol in RTU mode.
- 2.4.5 The load energize/de-energize remote control via RS-232/RS-485 interface.
- 2.4.6 Load energize/de-energize via remote breaker
- 2.4.7 Fault conditions system
- 2.4.8 Faulty conditions log
- 2.4.9 Load start/cutoff control with use of OM-310 front panel
- 3. Maintenance
- 4. Transportation and storage
- 5. Period of service, storage, and manufacturer’s warranty
- Appendix 1- Dependent time delay current based protection types:
- 23 -
NOVATEK-ELECTRO
ОМ-310
Table 2.8 - Fault codes
Fault description
Fault mne-
monic
Parameter value
Parameter
value reg-
ister ad-
dress
Fault
code
Register
address
bit №
de-energizing based on main
threshold crossing
Main threshold value
in 100* W
300
0
241:0
additional threshold crossing
additional threshold
value in 100* W
301
1
241:1
maximum phase current fault
maximum phase cur-
rent
302
2
241:2
against line-to-earth fault
(based on zero sequence
current)
zero sequence current
303
3
241:3
currents present when load
relay is de-energized (contac-
tor fault)
current
304
4
241:4
phase sequence order fault
5
241:5
minimum line voltage fault
voltage
306
6
241:6
maximum line voltage fault
voltage
307
7
241:7
phase imbalance fault
imbalance
308
8
241:8
remote control channel fault
9
241:9
emergency load de-energize,
automatic restart not possible
10
241:10
emergency de-energize of load
, automatic restart possible by
simultaneous pressing buttons
UP and DOWN
11
241:11
Emergency load de-energizing
by the remote breaker
12
241:12
The SETUP LED will start to flicker, and the ОМ-310 indicator panels will display line 1 from Table 2.9. Log
scrolling performed by pressing UP and DOWN buttons.
To exit log view mode press RECORD/RESET/SELECT button, or the log will close automatically after 30 sec
since last button was pressed.
Fault information is displayed on ОМ-310 device indicators as shown below in table 2.9.
Table 2.9
Mnemonic indicator output
Value indicator output
“”
number of log record (1- latest record)
XXX – fault mnemonic according
to table 2.8
YYY - parameter value according to table 2.8
(if parameter value is negative, “----“ is displayed)
XXX - hours since fault
YY - number of minutes since fault occurrence
2.4.9 Load start/cutoff control with use of OM-310 front panel
Depending on the parameter value, the ОМ-310 load relay can be controlled by pressing buttons UP and
DOWN simultaneously (unless ОМ-310 is in keypad lock-up mode):
=0 – no response;
=1 (load energizing permitted) – load relay will close, if AR time has not expired;
=2 ( emergency load de-energize) –load relay will open and produce “” fault code. Load restart is possi-
ble after disconnecting and re-connecting power to OM-310;
=3 (load energizing and de-energizing permitted) – load relay will open and produce “” fault code. To
close, press UP and DOWN buttons again.
N o t e -When parameters “=0” (after power-on, load is energized manually via ОМ-310 control panel)
and “
=0” (load energizing manual control forbidden) are selected, the load relay will not close.