CR720S CR721S
6
Fig. 1: Mounting surface
u
During installation, ensure that the pollution degree is 2 or better. Pollution degree 2 is a light,
common contamination which can become conductive caused by occasional condensation or hand
perspiration (DIN EN 60664-1).
5.3 Heat dissipation
CAUTION
The housing can heat up considerably.
w
Risk of burns
u
During installation, ensure sufficient heat dissipation.
u
Measure maximum device heating in the application. The maximum housing
temperature indicated in the data sheet must not be exceeded.
w
If housing temperatures presenting a danger to people are reached:
u
Cover housing to prevent unintentional contact.
u
Apply warning for hot surfaces visibly on the device.
5.4 Installation position
In wet environments, install the controller ensuring that no liquid remains on the connectors.
The installation position is defined by the 90° angled cable entry. The cable entries must be oriented
vertically downwards to prevent moisture ingress. If this is not possible then an orientation between
horizontal and vertically down is allowed.
5.5 Fastening
Fix the controller to a flat surface using 4 zinc-plated M6 screws.
Tightening torque: 10 ±2 Nm
Fig. 2: Installation
18
47
68,4
Fig. 3: Total height with the attached connector
