Installation
The control panel must be installed internally with a degree of pollution of not more than 2.
The cabinet has an IP2X degree of protection.
The controller setup and maintenance has to be made by qualified technicians after having carefully read the documentations and electrical schemes provided with the controller.
Protection toward indirect contacts has to be realized through magnetothermic and differential switches and a grounding system. Unless otherwise specified, the customer is requested to provide these protections.
Please refer to the wiring diagram supplied with the control panel for the following protection circuits:
- magnetotermic protection of the motor circuit
- magnetotermic protection of the safety circuit
- protection fuses of all other circuits
Protection measures against electric shock:
- The control panel case of the is metallic and must be grounded as indicated in the circuit diagram supplied with the control panel.
- The command and control circuits (24V) are galvanically separated from the main power supply as indicated in the wiring diagram supplied with the control panel.
- The safety circuit is galvanically separated from the main power supply as indicated in the wiring diagram supplied with the control panel.
Maintenance
For control panel’s maintenance, please refer to the manual supplied with the control panel. During periodic inspections of the system, check the alarm circuits’ battery status of the and the floor return circuit (if present).
Refer to the packaging instructions to handle and move the control panel.
Additional info about SECU modul
Description
SECU module is an electronic device installed in DMG Pitagora 4.0 lift control panel that allows to check the status of 7 point of the safety chain of the lift.
The main function of this module is to guarantee galvanic isolation between the safety circuit and the electronic circuits of the control panel.
Two version of this module are available:
- SECU for control panel with safety circuit powered at 48-130 V AC/DC -15/+10%
- SECU.230 for control panel with safety circuit powered at 230 V AC -15/+10%
Installation
The SECU module is supplied by DMG already installed and connected in the Pitagora 4.0 control panel. No intervention by the installer is required during commissioning of the control panel.
The common of the connections to the electric safety chain is traced on the printed circuit board in such way, that the common to the contactors or relay-contactors as mentioned according to EN 81-20;2020, 5.11.2.4 will switch off at interruption of the common (CBC(1) / CBC(9)).
Working conditions
The SECU module is installed in a metal earthed cabinet with minimum IP20 protection and fixed on a DIN rail at following service condition:
- Indoor Use.
- Temperature: +40°C / -5°C.
- Relative Humidity: must not exceed 50% at a max temperature of +40°C; may increase at lower temperatures, for example, can be 90% at 20°C.
Maintenance
In the event of a fault, the device must be replaced, it must not be opened or repaired.
