Hc4693 - LEGRAND 3440 Technical Sheet

Probe without selector
Description
The device can be used to control the room temperature, based on daily rhythms, both in
winter and in summer. On the front of the device are a green and a yellow LED. The green
led indicates that the device is working correctly.
The yellow LED indicates the status of the actuators, and any possible fault on the same.
The front of the item does not have any controls. This makes the device ideal for
installation in public places, so that any improper intervention may be prevented. The
anti-freeze/thermal protection and OFF modes can only be selected from the central unit.
OFF mode
Set this mode to turn the corresponding zone off.
Antifrost/thermal protection mode
By selecting this mode, if the temperature control system is set for heating, the probe
operates in anti-freeze mode. If the system is set for cooling, the probe operates in
thermal protection mode. The probe can also operate together with other probes of the
same type in "slave" or "master" configuration, to enable the central unit to calculate an
average of the temperatures taken from several detection points. This function is useful
for the management of very large areas, throughout which the temperature may change
consistently. In case of central unit fault, the probe will continue to work implementing
the last settings received, and therefore the last temperature set in the summer or winter
programs. However, the OFF mode also has priority in case of central unit fault. Therefore,
in this case the zone controlled by the probe will stay off. The probe can be used to control
a zone with up to 9 actuators and 8 slave probes of the same type.
Related articles
682 48 (Cover White)
685 48 (Cover Titanium)
Legend
1. Key in the low position to enable virtual configuration
2. Yellow LED: when it shines steadily or it is OFF it signals the state of the actuators in
the corresponding zone, when it flashes it signals a fault.
3. Green LED: when it shines steadily it indicates that the device is active.
Technical data
- Power supply from SCS BUS: 27 Vdc
- Operating power supply with SCS BUS: 18 – 27 Vdc
- Absorption: 6 mA
- Operating temperature: 0 – 40 °C
- Size: 2 modules
- Installation height: 1500 m from the floor
324
5739 21 (Magnesium)
MQ00180-c-EN
067458 HD4693
5739 20 (White)

HC4693

Front view
ZA
ZB
MOD
SLA
Rear view
NOTE: compared with the previous version, the P and DEL configurator sockets
have been removed.
29/04/2014
HS4693 N4693
L4693 NT4693
1 1
2 2
3 3
configurator
socket
BUS