Himoinsa CEC7 User manual

INSTRUCTION MANUAL
PROFESSIONAL
CEC7 DIGITAL SWITCHING CONTROL UNIT

| PAGE 2
CONTENTS
31. Introduction
52. Front of the display module
83. Operating modes
10 4. Connecting to the generator set
12 5. Operation
16 6. CEC7 control unit inputs and outputs
19 7. CEC7 control unit alarms
29 8. Maintenance
30 9. Options
32 10. Appendix I: parameters table
37 11. Appendix II: CEC7 control unit screens
47 12. Appendix III: synchronization
53 13. Appendix IV: dimensions, wiring, mechanical parts and electrical
characteristics
63 14. Appendix V: CEC communications
66 15. Appendix VI: calibration of the control unit

INTRODUCTION | PAGE 3
1. INTRODUCTION
The CEC7 control unit is an electric network signal supervision device and
conducts supervision and control of power supply through the generator set. The
control unit consists of 2 different modules:
•Display module. The display module is responsible for carrying out the
information tasks regarding the status of the device and allows actions
to be performed by the user; through the display module the user is
able to control the control unit, as well as program and congure the
functions. Through the display module, access is given to a record of
the last 100 errors registered by the control unit.
•Measurements module. The measurements module is responsible for
performing the tasks of monitoring and control of the control unit. This
module is located in the rear panel to reduce wiring and increase the
control unit's immunity against electromagnetic noise. All the signal,
sensor and actuators are connected to the measurements module.
(see appendix III).

INTRODUCTION | PAGE 4
The following additional modules can be added as options via the CAN bus:
•CAN/USB.
•C2CLOUD (GPRS and eet manager).
•CAN/485 (MODBus).
•CAN2LAN.
•CAN2LAN (MODBUS IP).
•CAN2LAN HG FLEET MANAGER.
•CAN2LAN (SNMP).
1.1 MEASUREMENTS MODULE
The measurements module provides the following electrical signal characteristics,
both those generated and those from the network itself:
•Phase-neutral voltage.
•Phase-to-phase voltage.
•Current phase.
•Frequency.
•Active, apparent and reactive power.
•Power factor.
•Genset instant energy (kWh).
•THD (total harmonic distortion) of voltages and currents
•Calculation of harmonics up to order 20.
The measurement module provides the following electrical panel control
functions:
1. Electrical panel alarm inputs:
•Emergency stop (mushroom head stop button).
2. Congurable inputs; the measurements plate has 3 inputs that can be
programmed to perform the following functions:
•Network contactor conrmation.
•Conrmation of genset contactor.
•Enabling of genset breaker activation.
The measurements module has relay outputs to command activation of network
and genset contactors. It also has a relay to command the start-up of genset via
voltage free output.
The connection of the measurements module and display module is performed
via a CAN communications bus, enabling the interconnection between additional
modules which ensures the scalability of the control unit.

FRONT OF THE DISPLAY MODULE | PAGE 5
2. FRONT OF THE DISPLAY MODULE
The display module has a backlit display and various LEDs for monitoring the
status of the control unit. It also has keys that allow the user to control and
program the control unit.
Fig.1
CEC7 display module
1. Backlit display with 4 lines of 20 digits.
NOTE
The display goes into low power mode (backlight off) after 10 minutes without
any button being pressed.
2. Control unit buttons:
•Control unit operating mode buttons.
•Control unit command buttons.
•Activation button for genset contactor and network contactor.
3. Status LEDs:
•ELECTRIC SIGNAL status LEDs.
•CONTACTORS status LEDs.

FRONT OF THE DISPLAY MODULE | PAGE 6
2.1.3. DISPLAY BUTTONS
Confirm (V). Enter the menus and conrm the data
entered.
Cancel (X). Leave the menus and cancel the data entered.
Up (+). Advances through the selection of display screens,
the maintenance menus selection and increases the
programmed values.
Down (-). Go back through the selection on display screens,
the selection in maintenance menus and decrease the
programming settings.
2.1.4. CONTACTOR BUTTONS
Network contactor. Enables/disables the network contactor
(manual mode only).
Genset contactor. Enable/disable genset contactor (manual
mode only).
2.1 CONTROL UNIT BUTTONS
2.1.1. BUTTONS FOR CONTROL UNIT OPERATING MODES
Automatic mode. The control unit
monitors the status of the installa-
tion and manages its operation and
the programmable inputs.
Lit LED: Active mode.
LED flashing: Active
mode lock (automatic
and manual mode).
LED off: Mode not
active.
Test mode. The control unit starts
the engine while monitoring and
managing its operation.
Locked mode. The control unit
monitors the status of the installation,
but limits the startup of the engine.
Manual mode. The control unit is
commanded by the user.
2.1.2. CONTROL UNIT COMMAND BUTTONS
Engine start button (only in manual mode).
Manages start-up with one touch.
Lit LED: Engine started.
Engine stop button (only in manual mode).
The rst press stops the engine following a cooling cycle.
The second press stops the engine immediately.
Lit LED: Motor stopping (with or without cooling).
ALARMS RESET button.
Allows notication of the alarm by the user.
LED ashing: Alarms pending notication.
Lit LED: Alarms active.

FRONT OF THE DISPLAY MODULE | PAGE 7
2.2 STATUS LEDS
2.2.1. CONTACTORS STATUS LEDS
Network contactor status Lit: Contactor active.
Flashing: Contactor in the
connection/disconnection
phase.
Off: Contactor disconnected.
Genset contactor status
2.2.2. ELECTRIC SIGNAL STATUS LEDS
Network signal status Lit: Active status without
errors.
Flashing: Status with errors.
Off: Inactive status.
Engine status
Status of the generator set's
AC electric signal
2.3 PASSWORDS
The CEC7 control unit has 2 levels of 4-digit password to protect against unauthorized
access. The different levels of access are as follows:
•User (default password: 1111). User level access allows the operator to
access the main menu of the CEC7 control unit.
•Maintenance (default password: 1911). Maintenance level access
allows the operator to access the Parameters programming option
from the main menu.
The CEC7 control unit's passwords are customizable by the user from the main
menu. A user can congure both passwords for their access level and lower-level
passwords.
NOTE
To enter a password, see Appendix II: Password entry.

OPERATING MODES | PAGE 8
3. OPERATING MODES
3.1 MANUAL MODE
In manual mode, the control unit is commanded by the user via the front panel of
the display module. The user can start and stop the engine by pressing the
START and STOP keys respectively.
Pressing the START key initiates the engine starting procedure (without
deactivating the network contactor). Pressing the STOP key initiates the engine
stopping procedure with cooling; a second press of the STOP key causes the
engine to stop immediately without waiting for the cooling time.
x 1 click
WITH cooling
x 2 (double click)
WITHOUT cooling
NOTE
In manual mode, the control unit's protection devices remain active, being able
to produce alarms that cause the engine to stop.
In manual mode, the control unit does not take into consideration the start
conditions (programmed, by external signal) that can be programmed.

OPERATING MODES | PAGE 9
3.4 LOCKED MODE
In Lock mode , the control unit disables the genset startup under any
condition.
3.5 AUTOMATIC MODE LOCK
Pressing the AUTO or MAN keys for 5 seconds activates the mode lock. This
status of the control unit is indicated by the ashing of the button for the mode
currently active. To deactivate the mode lock and allow normal operation of the
control unit, press the key associated to the active mode for 5 seconds.
5’’ Locked 5’’ Unlocked
5’’ Locked 5’’ Unlocked
Furthermore, activation of the network and genset contactors is performed by
pressing the RED/MAINS and GROUP/GEN keys.
In order to achieve activation of the genset contactor, the engine has to be
running and provide a stabilised electrical signal. Activation of the genset
contactor deactivates the network contactor and vice versa; there is a time delay
between activation of contactors of 1 second (not programmable).
3.2 AUTOMATIC MODE
In automatic mode supervision of the installation is managed by the control unit.
Under certain conditions which can be programmed, the control unit starts the genset
activating the genset contactor to power the installation.
Programmable conditions for genset starting and activation of the genset
contactor include:
•Maximum network voltage alarm (Alarms table, parameter 88).
•Minimum network voltage alarm (Alarms table, parameter 90).
•Maximum network frequency alarm (Alarms table, parameter 92).
•Minimum network frequency alarm (Alarms table, parameter 94).
•Network sequence alarm (Alarms table, parameter 96).
•Network failure alarm (Alarms table, parameter 98).
•Network contactor failure alarm (Alarms table, parameter 100).
•Programmed start time (if a schedule timer is available).
3.3 TEST MODE
In test mode , the control unit starts the genset following the procedure
explained in the section Engine Starting except the activation of contactors
except in the event a network failure occurs.
In Test mode, the control unit does not manage the functions associated with the
programmable inputs except those relating to alarms, analogue inputs and the
starter disable function of the control unit (IA).

CONNECTING TO THE GENERATOR SET | PAGE 10
4. CONNECTING TO THE GENERATOR SET
4.1 INTEGRATED OPERATION MODE
With the operation mode integrated into the genset, communication between the
manual control unit of the generator set (only for manual CEM7 gensets) and the
transfer switch controller is established, sharing information between the transfer
switch controller and the generator set control unit.
The integrated control mode on the generator set is programmed in the CEC7
control unit (Regulations table, parameter 30, values 0 and 1).
4.2 EXTERNAL TO GENSET OPERATION MODE
With the external to genset operation mode, the switching control unit monitors
the status of the generator set (started, stabilized,...) through the measured
generator voltage, without the need to communicate with the genset control unit.
The transfer switch controller commands the start-up or stopping of the generator
set via the BT voltage free contact.
The external control mode on the generator set is programmed in the CEC7
control unit (Regulations table, parameter 30, values 2).
4.3 EXTERNAL TO GENSET SMART OPERATION MODE
With the external to genset smart operation mode, the control unit monitors the
status of the generator set (started, stabilized, etc.) through the measured gener-
ator voltage, without the need to communicate with genset control unit. The
transfer switch controller commands the start-up or stopping of the generator set
via the BT voltage free contact.