User guide

Electrical connections

7.1. Other error messages

ACTUAL

SET

Incorrect/invalid entry. Value too small or too large, or

function not available.

Under menu item E

Sb the parameter is set to 1, and

the connection between Pin 2 and Pin 3 of the stand-

by connector is interrupted (see page 30).

8. Electrical connections

Notice: Use shielded cables only.

The shield of the connecting cable is electrically connected to the plug housing.

Stand-by input (L)





Pin assignment: Pin Signal

1 not used

2 5 V / DC

3 0 V

Activate the stand-by input:

Under menu item E

Sb, set the parameter to 1

(see page 36).

Connect an external contact 'AK' (e.g. for emergency switch-off)

or an alarm contact of the superordinated application system.

In case the connection between Pin 2 and Pin 3 is interrupted by

opening the contact 'AK', a complete shutdown of the circulating

pump, heater and cooling compressor is effected, and the unit

enters the condition "stand-by". The message "E

Sb" appears on

the MULTI-Display (LED2) (see page 30).

Alarm output (M)

This potential-free change-over contact is activated in case of an

alarm.

Pins 2 and 3 are connected under the following conditions:

- alarm

- status "OFF" and "rOFF"

- mains switch "off"

Switching capacity max. 30 W / 40 VA

Switching voltage max. 125 V/

Switching current max. 1 A