Selco C6200 Installation Manual

C6200 GENCONTROLLER

Installation Manual

Firmware: 080618

SELCO A/S

Betonvej 10 - DK-4000 Roskilde

Denmark

Phone: [phone] - Fax: [phone]

e-mail: [e-mail]

Web site: www.selco.com

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 2 of 18

Table of Contents

1 Preface .......................................................................................................................................... 3

2 Front view of C6200 .................................................................................................................... 4

3 Installation .................................................................................................................................... 5

4 Isolation and Grounding .............................................................................................................. 6

5 Connection ................................................................................................................................... 7

5.1 Power Supply ........................................................................................................................... 7

5.2 Voltage Inputs .......................................................................................................................... 7

5.3 Current Inputs .......................................................................................................................... 9

5.4 Programmable Inputs ............................................................................................................. 10

5.5 Analogue Inputs ..................................................................................................................... 10

5.5.1 Volt. In ............................................................................................................................... 10

5.5.2 Freq. In ............................................................................................................................... 10

5.6 Parallel Lines ......................................................................................................................... 11

5.7 GOV/AVR Control ................................................................................................................ 12

5.8 Inputs ...................................................................................................................................... 12

5.8.1 C/B ..................................................................................................................................... 13

5.8.2 Manual Control .................................................................................................................. 13

5.8.3 Unload ................................................................................................................................ 13

5.8.4 Reset Alarm ....................................................................................................................... 13

5.8.5 F/V Ctrl. Disable ................................................................................................................ 13

5.9 C/B Close ............................................................................................................................... 14

5.10 Protection Trip ....................................................................................................................... 14

5.11 Unload Trip ............................................................................................................................ 14

5.12 Programmable Outputs .......................................................................................................... 15

5.13 Analogue Outputs .................................................................................................................. 15

5.14 Alarm ..................................................................................................................................... 16

5.15 RS485 ..................................................................................................................................... 17

5.16 CAN bus ................................................................................................................................. 18

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 3 of 18

1 Preface

The SELCO C6200 module provides integrated frequency stabilization, voltage stabilization,
check/automatic synchronisation, active/reactive load sharing, integrated protection, basic and
programmable I/O and data acquisition. Finally, the C6200 module can operate with other C6200
modules and interface with the SIGMA S6500 User Interface Module via the CAN bus or SCADA
designed power management system via MOD bus.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 4 of 18

2 Front view of C6200

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 5 of 18

3 Installation

The C6200 module is secured to the rear of the switch board using four 5 mm. screws. DIN rail
mounting is not advisable due to the weight of the module.

Please ensure that enough space is given around the module so that the plug-in terminals can be
removed and reinserted. The length of the cables should also allow for the easy removal and
insertion of the plug-in terminals.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 6 of 18

4 Isolation and Grounding

In marine installations ground and common reference (COM) should not be connected together. In
a ship installation the hull is the “ground”. Connecting any of the COM connections on the C6200
module to ground (hull) or switchboard chassis may cause instability within the system.

As a general rule:

1. COM terminals should not be connected to ground (hull) or switchboard chassis.

2. Negative poles of the power supplies should not be connected to ground (hull) or

switchboard chassis.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 7 of 18

5 Connection

The C6200 module is connected using plug-in terminals. The plug-in terminals provide safe and
durable connection without sacrificing ease of installation and servicing.

5.1 Power Supply

The electronics of the C6200 module are powered by one power supply. The supply operates on a
nominal voltage of +24 V DC and the supply will tolerate wide variations in the supply voltage.
The aux supply occupies terminal 29 and 31 of the AUX SUPPLY plug-in connectors.

Terminal Description Signal Connection

29 AUX SUPPLY + +24 V DC Positive terminal of primary supply
30 FREE FREE
31 AUX SUPPLY - -24 V DC Negative terminal of primary supply

The auxiliary power supply is not isolated from the remaining electronics of the module with the
exception of the GOV and AVR controller. This means that the supply reference terminal (terminal

31) has connection to the module’s COM terminal.

The front AUX SUPPLY LED illuminates with a steady green light to indicate that the supply
voltage is OK and within the limits of safe operation.

5.2 Voltage Inputs

The AC voltages connect to the BUS BAR VOLTAGE & GENERATOR VOLTAGE INPUTS
plug-in terminals.

The voltage inputs can operate with high voltage (up to 690 VAC nominal), so precaution
must be taken to avoid electrical shock and personal injury. Do not touch the VOLTAGE
INPUTS plug-in terminal unless you are absolutely sure that power source is off (e.g. the
generator is stopped and blocked against starting).

Voltages above 690 VAC are supported through use of external transformers (PT). When using PT
it is important to ensure that the PT does not affect the phase of the voltage measurement. Phase
shift in the PT will directly affect the calculation of the power factor, and thereby the calculation of
active and reactive current/load.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 8 of 18

The phases L1 & L2 of the bus bar and generator source should be connected to L1 & L2 of the bus
bar/generator VOLTAGE INPUTS plug-in terminals. Intermediate 2 A slow-blow fuses should be
inserted between the individual phases and the related voltage inputs. It is very important that the
phases are connected in the correct order. Interchanging the phases will result in an incorrect power
factor calculation and thereby incorrect calculation of active/reactive current/load. It is very
important that the phases are connected to the corresponding terminals (phase 1 to L1, phase 2 to
L2 ).

Terminal Description Signal Connection

5 VOLTAGE INPUTS L1 AC voltage Generator phase L1
6 VOLTAGE INPUTS L2 AC voltage Generator phase L2

The GENERATOR VOLTAGE LED shows whether or not the voltage levels measured between
the phases are within limits. The reference is the nominal phase-phase voltage (NOMVOLT). The
voltage levels are compared to the limits defined by the voltage OK window (VOLTOKWND) of
the configuration.

Terminal Description Signal Connection

1 VOLTAGE INPUTS L1 AC voltage Bus bar phase L1
2 VOLTAGE INPUTS L2 AC voltage Bus bar phase L2

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 9 of 18

5.3 Current Inputs

The C6200 module measures current through an external current transformer (CT). The C6200
module is available in two different variants; one is for 5 A CTs and one for 1 A CTs. Please ensure
that you have the correct variant of the module before proceeding with the installation.

The CT ratio should cover maximum current of the generator.

The CT must also be capable of coping with short-circuit currents over short periods.

The external CT is connected to the CT INPUTS plug-in terminal. It is important to ensure that the
direction of the current flow is correct. The current flow is indicated by the S1 and S2 notation on
the CT. S1 of the CT connects to terminal 14 and S2 of the CT connects to terminal 13.

Terminal Description Signal Connection

13 CT INPUTS 5 AC current S2 of the CT on phase L3
14 CT INPUTS 6 AC current S1 of the CT on phase L3

Make sure that the secondary side of the CT is shorted (make a connection between S1 and
S2) before disconnection of the CT INPUTS plug-in connector. Failure to do so may cause
damage to the CT.

Please note that incorrect connection of the current transformers could result in zero current
readings, even when the generator is on load.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 10 of 18

Correct measurement of the current is extremely important, as the C6200 module relies upon the
current measurements for the calculation of power factors, active currents/loads, reactive
currents/loads, integrated protection functions and load sharing.

5.4 Programmable Inputs

The programmable input connector houses a number of digital inputs. The digital inputs work with
negative reference, meaning the inputs are considered active when at COM level and inactive when
left open (disconnected). The inputs are used for external activations of regulation and other
functions. The functions are described in the C6200 Configuration Manual.

Terminal Description Signal Connection

15 PROGRAM INPUT 1 NO contact to COM Function request
16 PROGRAM INPUT 2 NO contact to COM Function request
17 PROGRAM INPUT 3 NO contact to COM Function request
18 PROGRAM INPUT 4 NO contact to COM Function request
19 PROGRAM INPUT 5 NO contact to COM Function request
20 PROGRAM INPUT 6 NO contact to COM Function request
21 PROGRAM INPUT 7 NO contact to COM Function request
22 PROGRAM INPUT 8 NO contact to COM Function request
25 GND COM

5.5 Analogue Inputs

The analogue inputs are used when two busbar sections should be synchronized with each other or
with the grid. They can also be used in case the load of the generator should be remotely controlled
in grid parallel applications.

5.5.1 Volt. In

The VOLT. IN input is an analogue input. The input can be used for external control of the
generator voltage, provided that the F/V CTRL. DISABLE input is active (connected to COM). The
analogue control signal must be a voltage between -5 and 5 V DC. The VOLT. IN input uses the
COM terminal as reference. If not used, the VOLT. IN input should be connected to COM. This is
especially important while the F/V CTRL. DISABLE input is active.

5.5.2 Freq. In

The FREQ. IN input is an analogue input. The input can be used for external control of the
generator frequency provided that the F/V CTRL. DISABLE input is active (connected to COM).
The analogue control signal must be a voltage between -5 and 5 V DC. The FREQ. IN input uses
the COM terminal as reference. If not used, the FREQ. IN input should be connected to COM. This
is especially important while the F/V CTRL. DISABLE input is active.

Terminal Description Connection

23 VOLT IN External voltage input, +/- 5V
24 FREQ IN External voltage input, +/- 5V
25 COM Common reference

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 11 of 18

5.6 Parallel Lines

The signals of the parallel lines plug-in connector is used for balancing the active and reactive
current/load between multiple C6200 modules. The signal level of the parallel lines can also be
adapted to suit other types of SELCO load sharers (e.g. the SELCO T-series).

In case the automatic voltage regulator (AVR) is not controlled by the C6200, it is not necessary to
connect the kVAr balance line.

Terminal Description Signal Connection

26 kW BALANCE DC voltage kW BALANCE of other C6200 modules
27 COM Common reference COM of the other C6200 modules
28 kVAr BALANCE DC voltage kVAr BALANCE of other C6200 modules

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 12 of 18

5.7 GOV/AVR Control

Two sets of analogue outputs are provided on-board by the C6200 module. The analogue outputs
are intended for direct control of electronic speed governor and/or AVR. Each analogue output can
be configured to provide a DC voltage within the range of -10 to +10 V DC, a DC current within
the range of 0 to 20 mA or a PWM signal with a default base frequency of 500 Hz. The outputs are
isolated from each other and from the remaining electronics of the module. This means that the
references of the outputs have no connection to each other or to the common reference (COM) of
the module.

Terminal Description Signal Connection

32 ANALOG OUTPUT 1 REF reference (isolated) Governor reference
33 ANALOG OUTPUT 1 PWM PWM signal Governor PWM input
34 ANALOG OUTPUT 1 mA DC current Governor current input
35 ANALOG OUTPUT 1 VDC DC voltage Governor voltage input
36 ANALOG OUTPUT 2 REF reference (isolated) AVR reference
37 ANALOG OUTPUT 2 PWM PWM signal AVR PWM input
38 ANALOG OUTPUT 2 mA DC current AVR current input
39 ANALOG OUTPUT 2 VDC DC voltage AVR voltage input

It is important to note that each analogue output is protected against short-circuit by an internal 10
kΩ resistor. The resistor is placed in series on the output terminal. The output resistor might affect
the magnitude of the output signal if the internal resistance of the driven equipment is low. The
principle of voltage division applies between the output resistor and the internal resistance of the
driven equipment.

Example: equipment with an internal resistance of only 10 kΩ would reduce a +10 VDC output
voltage to +5 VDC. The two 10 kΩ resistors in series would make a 1:2 voltage divider. Likewise,
the amplitude of the PWM signal is limited to +8 V DC.

5.8 Inputs

The Inputs plug-in connector houses a number of digital and analogue inputs. The digital inputs
work with negative reference, meaning the inputs are considered active when at COM level and
inactive when left open (disconnected). The analogue signals use negative reference as well, which
means that the analogue voltages (e.g. 0 - 1 VDC signals) must have COM as reference.

Terminal Description Signal Connection

40 C/B NO contact to COM External switch, output or relay
41 Manual Control NO contact to COM External switch, output or relay
42 Unload NO contact to COM External switch, output or relay
43 Reset Alarm NO contact to COM External switch, output or relay
44 Freq Ctrl disable NO contact to COM External switch, output or relay

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 13 of 18

5.8.1 C/B

The C/B input provides feedback from the generator circuit breaker and is used by the C6200
module to determine if the breaker is open or closed. C/B is typically connected to COM through an
auxiliary contact of the breaker. The breaker is considered closed by the C6200 module when the
C/B input is at COM level.

5.8.2 Manual Control

When switched to manual control, C6200 will only interfere with speed and voltage of the
generator in case it got a command to do so via the programmable inputs (terminals 15 to 22). Such
commands could for example be start synchronizing, start load sharing or speed increase (for
complete list of programmable functions please refer to the configuration manual). The input is
active when at COM level and inactive if left open.

5.8.3 Unload

The UNLOAD input is used to do a ramped unload of the generator before the breaker is tripped.
UNLOAD is typically initiated from an external switch. Unload starts once the UNLOAD signal is
put to COM level. Disconnecting the UNLOAD signal causes reconnection of the generator, where
after the load ramp up again.

5.8.4 Reset Alarm

Reset Alarm is used to reset the alarm relay. Reset Alarm is active when the input is at COM level.

5.8.5 F/V Ctrl. Disable

The F/V CTRL. DISABLE input is used to deactivate the voltage and frequency stabilization of the
C6200 module. The signal is considered active when the input is connected to COM level, and
inactive when left open. The signal is typically used when the generator is operated in parallel with
a shaft generator or the grid (power sources that determine the voltage and frequency), or when the
voltage and frequency are controlled by external equipment (through the VOLT. IN and FREQ. IN
analogue inputs).

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 14 of 18

5.9 C/B Close

This connector includes the terminals of the changeover relay for closure of the circuit breaker. The
C/B close relay has two contact sets and is normally de-energized by default. Note that this relay
can be reconfigured to normally energized operation.

Terminal Description Signal Connection

45 C/B CLOSE 1 Relay de-energized position Breaker remote close
46 C/B CLOSE 2 Relay contact Signal source
47 C/B CLOSE 3 Relay energized position Breaker remote close

5.10 Protection Trip

The terminals of this relay are intended for tripping the circuit breaker in case of protection trips
(e.g. by the reverse power protection function). The built-in protection trip relay has two contact
sets and is normally energized by default. Note that the protection trip relay can be reconfigured to
normally energized operation.

Terminal Description Signal Connection

48 PROT TRIP Relay de-energized position Breaker remote trip
49 PROT TRIP Relay contact Signal source
50 PROT TRIP Relay energized position Breaker remote trip

The protection trip relay connects to the remote trip input of the generator circuit breaker. Terminal
1 and 3 are typically not connected at the same time. Only one of these signals is taken to the
breaker, depending on whether the Protection Trip relay is configured for normally energized or de­energized operation.

5.11 Unload Trip

The unload trip relay connects to the remote trip input of the generator circuit breaker. Terminal 1
and 3 are typically not connected at the same time. Only one of these signals is taken to the breaker,
depending on whether the unload trip relay is configured for normally energized or de-energized
operation. The unload trip relay disconnects the circuit breaker after the generator has been
unloaded by the unload function.

Terminal Description Signal Connection

51 Unload Trip Relay de-energized position Breaker remote trip
52 Unload Trip Relay contact Signal source
53 Unload Trip Relay energized position Breaker remote trip

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 15 of 18

5.12 Programmable Outputs

The programmable outputs are open collector outputs and work as electronic contacts to COM. The
outputs are used for external feedback signals or indication signals. The functions are described in
the C6200 Configuration Manual.

Terminal Description Signal Connection

54 PROGRAM OUTPUT 1 Open collector output External output
55 PROGRAM OUTPUT 2 Open collector output External output
56 PROGRAM OUTPUT 3 Open collector output External output
57 PROGRAM OUTPUT 4 Open collector output External output
58 PROGRAM OUTPUT 5 Open collector output External output
59 PROGRAM OUTPUT 6 Open collector output External output
60 PROGRAM OUTPUT 7 Open collector output External output
61 PROGRAM OUTPUT 8 Open collector output External output

When using an open collector output, ensure that the DC voltage connections are connected in the
right way.

5.13 Analogue Outputs

Two analogue outputs are provided on-board by the C6200 module. The analogue outputs are
intended for use with third party meters or measuring equipment. Each of the two outputs can be
individually configured in relation to any one of the measured or calculated parameters provided by
the C6200 module.

Each analogue output can be configured to provide a DC voltage within the range of -10 to +10 V
DC. The two outputs are not isolated from each other or from the remaining electronics of the
module. This means that the reference of the outputs has the same common reference (COM) as the
module.

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 16 of 18

The analogue outputs can be used for external indication on meters or to provide analogue readings
to e.g. a PLC.

Terminal Description Signal Connection

62 ANALOG OUTPUT 1 VDC DC voltage External voltage input
63 ANALOG OUTPUT 2 VDC DC voltage External voltage input
64 ANALOG OUTPUT REF Reference (COM) Internal reference

It is important to note that each analogue output is protected against short-circuit by an internal 10
kΩ resistor. Resistors are placed in series on the output terminal. The output resistor might affect
the magnitude of the output signal if the internal resistance of the driven equipment is low. The
principle of voltage division applies between the output resistor and the internal resistance of the
driven equipment. Example: equipment with an internal resistance of only 10 kΩ would reduce a
+10 VDC output voltage to +5 VDC. The two 10 kΩ resistors in series would make a 1:2 voltage
divider.

5.14 Alarm

The ALARM includes two contact sets. The alarm relays can only operate as a normally energized
relay. This is to ensure that the ALARM relay will trip in case both supplies fail.

Terminal Description Signal Connection

65 Alarm Contact Relay de-energized position Alarm system
66 Alarm Contact Relay contact Signal source
67 Alarm Contact Relay energized position Alarm system

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 17 of 18

5.15 RS485

The C6200 module includes an isolated RS485 interface.

Terminal Description Signal Connection

Left B - RS485 B B signal of the RS485 bus
Middle A + RS485 A A signal of the RS485 bus
Right REF Reference (isolated) Reference of the RS485 bus

It is important to note that the RS485 reference is isolated from the common COM of the module.

The 3-wire RS485 bus is connected from module to module.

The first and the last module on the RS485 bus need a termination resistor (150Ω) between lines A
and B. It is not necessary to connect external resistors. The C6200 contains internal end of line
resistors for the RS485 bus. They can be activated by DIP switch 5 on the front of the C6200.
Therefore, on the first and on the last unit on the RS485 bus DIP switch 5 has to be switched to ON.
The maximum cable length for RS485 is 1000 meters. The cable type must be twisted (twisted pair)
for A and B. The cable must be shielded. One end of the shield (and only one end) must be
connected to switchboard chassis.

Cable 2-LiYCY TP shielded 2x2x0,75 can be used

It is sometimes necessary to fix the potential of the RS485 + and – lines due to interference from
other sources. This is done using two 1 kΩ resistors. One is fixed between RS485 + and +5 VDC,
the other is fixed between RS485 – and the reference of the +5 VDC supply. The reference of the
+24 VDC supply must then be connected to terminal 1 of the RS485 plug on each and every
module.

PLC

SELCO A/S C6200 Module

Revision: 19.06.2008 Page 18 of 18

5.16 CAN bus

The CAN bus is only used in connection with a S6500 User Interface. S6500 is only for display and
programming purposes. Thus the C6200 is independent of the CAN bus for its operation.

The CAN bus terminals are located on the front plate in the right side. The terminals are module
standard used in Data communication equipment. Therefore, use standard twisted pair patch cable
for CAN bus wiring. The maximum cable length is 40 meters. The cable type should be 0.25 - 0.34
mm2 (AWG23/AWG22). Cable resistance should be less than 26 mΩ per meter.

The first and the last module on the CAN bus need a termination resistor (150Ω) between lines A
and B. It is not necessary to connect external resistors. The C6200 contains internal end of line
resistors for the CAN bus that can be activated by dip switch 6 on the front of C6200. Therefore,
on the first and on the last unit on the CAN bus dip switch 6 has to be switched to ON. Every
C6200 module of the installation must be connected to the same CAN bus network. Third party
CAN nodes may not be connected to the C6200 CAN bus.

150Ω resistor
via dip switch

150Ω resistor