Installation Instructions; Cooling Systems; Safety Relay For „Safety Stop In Accordance With En954-1/ Category 3 - KEB Combivert F5 series Instruction Manual

Preface
1.8

Installation instructions

1.8.1 Cooling systems

The KEB COMBIVERT F5 is available for different cooling systems:
Standard version
The standard version is delivered with heat sink and cooling fan (described in the following).
Special versions
The dissipation of power loss must be guaranteed by the machine builder.
• Flat rear
There is no heat sink at this version. The unit must be mounted on an appropriate ground for
heat dissipation.
• Water cooling
This version is dimensioned for the connection to an available cooling system. The dissipa-
tion of the power loss must be ensured by the machine builder. In order to avoid moisture
condensation, the minimum inlet temperature may not decrease the ambient temperature.
The max. inlet temperature may not exceed 40°C. No aggressive coolant shall be used.
Measures against contamination and calcination must be done externally. Max. pressure on
the cooling system may not exceed 4 bar (special versions with higher pressures possible on
request).
• Convection (through-mount version)
In this version the heat sink is placed externally with a cutout in the control cabinet.
1.8.2 Safety relay for „safety stop in accordance with EN954-1/ category 3"
With the function "safety stop" one of the following conditions must be fulfilled:
• the power supply to the drive must be interrupted (double security)
• no torque at the drive
The KEB COMBIVERT F5 with safety relay fulfills the condition: no torque by a safe disconnec-
tion of the driver signals for the power modules (IGBT). There is no voltage disconnection.
This is guaranteed by a two-channel processing holding signal. On of the channels is develo-
ped in programmed electronics. The second channel consists of an electro-mechanical relay.
The function of the relay is cyclically monitored by the programmed electronics.
Through the double safety no further measure is needed for the KEB COMBIVERT
(e.g. feedback via relay contact) since an individual error in the control does not lead
to the loss of the stop function.
GB - 12
Heat sinks can reach temperatures, which can cause burns when
touching. If in case of structural measures a direct contact cannot be
avoided, a warning notice "hot surface" must be mounted at the ma-
chine.