CIRCUTOR CBS8 User Manual
RELAY STATION
CBS-8 SERIES
INSTRUCTION MANUAL
( M98158101-20-06C-GB)
(c)
CIRCUTOR S.A.
----- Relay Station CBS-8 -------- --- Page No. 1
CBS-8 ANALYZER INDEX Page No.
CHECKS ON RECEIPT..................................................................................................3
1.-
2.- GENERAL FEATURES ..................................................................................................4
3.- INSTALLATION AND START UP...................................................................................6
3.1.- Installing the equipment ....................................................................................6
3.2.- CBS-8 terminal ratios (as labels).......................................................................8
3.3.- CBS-8 connection diagram. ..............................................................................9
3.3.1.- For measuring current:................................................................................9
3.3.2.- For earth leakage protection: ....................................................................10
4.- OPERATION ................................................................................................................11
4.1.- Normal mode...................................................................................................12
4.2.- Test mode .......................................................................................................15
4.3.- Reset mode .....................................................................................................17
4.4.- Setting mode ...................................................................................................18
5.- SETTING(SET-UP menu) ............................................................................................19
5.1.- Channel setting ...............................................................................................19
5.1.1.- Setting common parameters.....................................................................20
5.1.2.- Channel setting: ........................................................................................21
5.1.2.1.- Selection of toroid connected. ............................................................21
5.1.2.2.- Earth leakage mode:...........................................................................22
5.1.2.3.- Reclosures..........................................................................................25
5.2.- Communication configuration..........................................................................27
5.2.- Time setting..................................................................................................... 29
6.- TECHNICAL FEATURES .............................................................................................30
7.- SAFETY ADVICE .........................................................................................................32
8.- MAINTENANCE ...........................................................................................................32
9.- TECHNICAL SERVICE ................................................................................................32
10.- CBS-8 COMMUNICATIONS... ..................................................................................33
10.1.- Please Note:.................................................................................................. 33
10.2.- RS-485 connection system to a PC (RS-232)...............................................34
10.3.- MODBUS© Protocol....................................................................................... 35
10.3.1.- Readout logs...........................................................................................36
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10.3.2.- Operating logs.........................................................................................38
11.- APLICATION EXAMPLE ...........................................................................................39
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1.- CHECKS ON RECEIPT
This manual assists in the installation and handling of the CBS-8 relay station to obtain
the best results from it. On receiving the equipment check the following:
a) The equipment is the same as the one you ordered.
b) Check that the equipment has not been damaged during delivery.
c) Check that it is supplied with the correct instruction manual.
d) CD with “EasyComm CBS-8” software
For safety reasons, it is vital that people installing or handling
the CBS-8 relay station follow the usual safety procedures as well
as the specific warnings contained in this instruction manual.
Check the following before connecting the equipment:
(a) Power supply voltage: see information on the side label.
Standard: 230 V AC. – Single phase, 50 ... 60 Hz
Other voltages: on request
(b) Maximum admissible current: according to toroid used (WG or WGP)
----- Relay Station CBS-8 -------- --- Page No. 4
2.- GENERAL FEATURES
The CBS-8 relay station is programmable DIN rail mounted equipment offering
several operational options selected from menus on the equipment itself during set
up. Before starting the equipment carefully read the sections CONNECTION AND
SET UP and select the correct operating mode to obtain the required data.
Rd
Ed
S1S1S2 S2S2 S2S1S1
The CBS-8 is measuring equipment that calculates and displays the current
flowing in true effective values allowing decisions to be made on the operation to be
undertaken. It can operate as a maximum and minimum current relay and as earth
leakage protection. To do this, it has 8 input channels, 8 operating relay outputs (1
per channel), one alarm output and one test output.
----- Relay Station CBS-8 -------- --- Page No. 5
Current is measured by calculating the true effective value of one cycle. If this
value exceeds a (preset) threshold for a time period set by the user, then the
corresponding operational relay is activated.
The behaviour of the relays can be selected depending on how the CBS-8 is
set up. They can act as blocking relays or with recoverable trip. In current relay
mode, selection is done via the keyboard and in earth leakage mode it is activated
via the “EasyComm CBS-8” software on the Cd supplied with the equipment.
The CBS-8 uses an LCD display to show the current or earth leakage and the
status of the operational relay for each of the 8 channels.
---------------------------------------------------------------------------------------------
OTHER FEATURES
- It is a small instrument to be mounted on a DIN rail.
- Measures in TRMS.
- Measurement in 8 independent channels.
- Channels configurable as earth leakage protectors or current relays.
- Alarm relay.
- Operation history logger.
- RS-485 communication for PC.
- Automatic resetting option (in RS-485 earth leakage channels).
- Pre-alarm registers (RS-485).
----- Relay Station CBS-8 -------- --- Page No. 6
3.- INSTALLATION AND START UP
This manual contains information and warnings that the user
must follow to ensure the safe operation of the equipment and to keep
it in a safe condition. It must not be used until it is finally located on the
electrical board.
If this equipment is used in a way not specified by the
manufacturer, the equipment’s protection may be compromised.
If it is likely that safety has been affected (e.g. visible damage) the power
supply must be disconnected. In this event, contact a qualified service technician.
3.1.- Installing the equipment
Before running voltage through the equipment the following points must be
checked:
a.- Power supply voltage: see label on the side of the equipment.
- Standard power supply: Single phase 230 V ∼ (AC.)
Other voltages: on request
- Frequency : 50 - 60 Hz
- Power supply tolerance : + 15 % -20%
- Connection board : Terminals 1 - 28 (Power supply)
- Consumption : 4 W
----- Relay Station CBS-8 -------- --- Page No. 7
b.- Maximum admissible current: According to the transformer used.
WGxx 30 mA - 3 A WGPxx 300 mA - 30 A
c.- Operating conditions:
- Operating temperature : -10 ºC to +50 ºC
- Relative humidity : 5 to 95 % HR (without condensation)
- Altitude : up to 2000 m
d.- Safety:
- Designed for category III installations - 300 V AC (EN 61010).
- Electric shock protection by class II double isolation.
Installation
:
The equipment is to be installed on 46277 DIN rail (EN 50022). All connections
are to be inside the electrical casing.
Remember that the terminals can be dangerous if touched when the equipment is
connected. Removing covers or parts may give access to parts that are dangerous if
touched. The equipment must not be used until it is completely installed.
The equipment must be connected to the power supply circuit with a minimum
1 mm2 cable and protected with gl (IEC 269) or M type fuse between 0.5 and 2 A. It
must be fitted with a short circuit breaking element or equivalent to disconnect it from
the power supply.
----- Relay Station CBS-8 -------- --- Page No. 8
3.2.- CBS-8 terminal ratios (as labels)
Terminal No Name Type
1 - 28 Power Supply A1 - A2 Power supply 230 V AC.
27 – 26 Test 1 - Test 2 Test output
25 COM Common relay outputs
24 RL1 Relay output channel 1
23 RL2 Relay output channel 2
22 RL3 Relay output channel 3
21 RL4 Relay output channel 4
20 RL5 Relay output channel 5
19 RL6 Relay output channel 6
18 RL7 Relay output channel 7
17 RL8 Relay output channel 8
16 - 15 ALARM Alarm output
14
13
12
11 T8 – S1 S1 Current transformer channel 8
10 T7 –S1 S1 Current transformer channel 7
9 common – S2 S2 Current transformer channels 5,6,7 and 8
8 T6–S1 S1 Current transformer channel 6
7 T5–S1 S1 Current transformer channel 5
6 T4–S1 S1 Current transformer channel 4
5 T3–S1 S1 Current transformer channel 3
4 common-S2 S2 Current transformer channels 1,2,3 and 4
3 T2–S1 S1 Current transformer channel 2
2 T1–S1 S1 Current transformer channel 1
GND
( -- )
(+ )
COM CBS-8: RS-485 connection to PC.
14 GND ---------> 5 converter
13 -- ---------> 2 (--) RS-485/RS-232
12 + ---------> 1 (+)
NOTE: Current inputs are designed for WG or WGP transformers.
----- Relay Station CBS-8 -------- --- Page No. 9
3.3.- CBS-8 connection diagram.
3.3.1.- For measuring current:
2S2
2S1
1S2
1S1
1S2
1S2
1S2
1S2
1S1
T7
1S1
T8
T2
T1
1S1
1S1
1S2
1S2
1S2
1S2
1S1
1S1
T3
T4
1S1
T6
1S1
T5
----- Relay Station CBS-8 -------- --- Page No. 10
3.3.2.- For earth leakage protection:
CBS-8
Utilización 2
WG 2
Bobina 2
1S2
1S1
2S2
2S1
L1 L3L2 N
WG 1
Bobina 1
2S2
2S1
1S2
1S1
Rd
Ed
BOBINA-2
Utilización 1
----- Relay Station CBS-8 -------- --- Page No. 11
-
4.- OPERATION
The equipment is designed for 50 Hz and 60 Hz installations.
This equipment may be used as for earth leakage measurement or for earth
leakage protection. This will depend on the connection (earth leakage protection) or
not (earth leakage current measurement) of the operational relay outputs for the
different channels.
The CBS-8 has several operating modes:
- Normal mode: The CBS-8 continuously measures currents. If the relay
outputs are connected it will be used for earth leakage protection or as a
current relay.
- Test mode: Checks the status of the connections between the CBS-8 and
toroidal as well as the working of the different LEDs.
- Reset mode: Allows the tripped channels to be reset.
- Set up mode: Allows the relay station to be configured.
The CBS-8 will always be in normal mode when it is switched
on.
It has 4 buttons and 5 LEDs that have a different following function according
to mode.
The CBS-8 has a non volatile, rotating memory where the 100 most recent
events are logged. Each log shows:
- Date
- Channel tripped
- Trip current
----- Relay Station CBS-8 -------- --- Page No. 12
4.1.- Normal mode
The equipment has a 2 line LCD display:
Rd
Ed
When the CBS-8 is switched on the following information appears on the
display for a few moments:
CBS 8
xxxx
( Software version
After a few seconds the equipment is ready to be used and displays one of the
possible screens according to the set up.
NB: If the word “max” appears on the screen during normal operation, it
means that the detected current is higher than the preset range. In the event of this
happening the measurement will not be accurate.
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