HEIDENHAIN iTNC 530 HSCI Service Manual

28 – 464 HEIDENHAIN Service Manual iTNC 530 HSCI
28.3.2 Pin layouts
X7:
Bridge for
signal ground
(= functional
ground)
In shipping condition, the CC 61xx is connected over an external bridge (pin 1) with the housing
(pin 2). If only one CC 61xx is in the system, it ensures the correct signal-ground connection of the CC.
If there are two or more CC 61xx units in the system that are connected over a UV power module
to the same supply bus (X69), this external signal-ground bridge can stay connected with only one
CC 61xx. To avoid ground loops, these signal ground bridges from any more CCs must be removed.
If there are two or more CC 61xx units powered over more than one UV power module and are
therefore connected with different supply bus systems (X69), then the external signal-ground bridge
is connected with only one CC 61xx of the respective supply bus. This bridge for the signal ground on
all other CC 61xx units that are on a common supply bus (X69) must be disengaged in order to prevent
ground loops.
Connecting terminal X7 Assignment
1 Connection for signal ground (= functional
ground)
2 Connection on housing

HEIDENHAIN iTNC 530 HSCI Specifications

General

Brand	HEIDENHAIN
Model	iTNC 530 HSCI
Category	Control Systems
Language	English