Manual

Manual – TopCon TC.GSS
Options and system options
Hardware options
5.2.2. Integrated safety relay option
Standard applied: EN ISO 13849-1:2006
The flow of up to 32kW of energy is interrupted between the mains connection
and the DC connection by the integrated safety relay.
Interface X107
From
DSP
3
Integrated
safety
Relay
ISR
Pulse Modulator
circuit
1
2011-10-18 77 / 298 V00.05b
24 V
Fig. 42 Diagram of the principle of the energy transfer.
2
primary
side
5
secondary
side
Using a PWM generator -1- a pulse-width controlled AC voltage is generated
-2-. This is applied to the primary side of four transformers. On their secondary
side the supply for the electrically isolated gate driver (IGBT) -4- is generated
via a rectifier and smoothing elements.
The positively driven safety relay -3- interrupts the supply to the primary side.
The pulse-width controlled AC voltage -2- is no longer generated. There is no
further flow of energy on the secondary side. Correct function is ensured by
the positively-driven contacts on the relay.
=
4
IGBT1
IGBT2
IGBT3
IGBT4