MPT
700
45
Please read sections 5.2.1 and 5.2.3 and check whether jumpers 500 and 501
have been correctly set for your configuration.
5.1.8 Switching outputs
For the switching outputs, i.e. the 8 burner outputs, the 2 heating/cooling outputs
and the malfunction outputs (contacts 2zd, 4zd, 6zd, 8zd, 10zd, 12z) conductors
with a cross section of at least 0.50mm
2
must be used, depending on load and
cable length. For the return circuits to contacts 6b and 8b, conductors with a cross
section of at least 0.75mm
2
must be used. These conductors may be combined
with other control circuit conductors of the same type in cables.
No voltage may be applied to the outputs
.
The common return circuit depends on the power supply (section 5.1.5).
Depending on the model, the return circuit is identical with +Vcc (model M) or GND
(model P).
The total load current on all switching outputs must not exceed 1.1A. The
maximum admissible load current on each switching output is 100mA.
Switch outputs are not fused and are not protected against short circuits.
Overloading of one or more outputs may damage or destroy the unit!
Switching outputs:
Contacts: burner 1
2z
(active = burner on)
burner 2
2d
(active = burner on)
burner 3
4z
(active = burner on)
burner 4
4d
(active = burner on)
burner 5
6z
(active = burner on)
burner 6
6d
(active = burner on)
burner 7
8z
(active = burner on)
burner 8
8d
(active = burner on)
heating/cooling 1 10z (active = heating on)
heating/cooling 2 10d (active = heating on)
malfunction
12z (active = no malfunction)
return
6b+8b
Cross section:
≥
0.50mm
2
for switching outputs (depends on load and cable
length)
≥
0.75mm
2
for return conductors
Cable type:
shielded
