Carel Hecu handleiding
Handleiding
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18
Hecu +0300023EN rel. 1.2 - 14.12.2021
Caution: the following warnings must be observed when
connecting the controllers:
• incorrect connection to the power supply may seriously damage the
controller;
• use cable ends suitable for the corresponding terminals. Loosen each
screw and insert the cable ends, then tighten the screws and lightly
tug the cables to check correct tightness;
• separate as much as possible the probe and digital input cables from
cables to inductive loads and power cables, so as to avoid possible
electromagnetic disturbance. Never run power cables (including the
electrical panel cables) and probe signal cables in the same conduits;
• do not install the probe cables in the immediate vicinity of power
devices (contactors, circuit breakers, etc.);
• reduce the path of probe cables as much as possible, and avoid spiral
paths that enclose power devices.
Caution: class A software - the safety devices providing overload
and high pressure protection must control the compressor directly, and
consequently need to be wired in series with the compressor contactor
control signal.
Notice: the serial connection starts from terminal J10 on Hecu and
runs through the power+ inverter and all the MPXPRO controllers
installed on the refrigerated units. The maximum number of MPXPRO
controllers is 5, the limit for this application.
The following recommendations must be observed:
• connect the two twisted wires to the Tx/Rx+ and Tx/Rx- terminals;
• connect the single wire to the GND terminal;
• connect the shield to earth at one end only;
• use a shielded cable (e.g. Belden 3106A – AWG 22);
• for the supervisor serial network connection only: connect a 120 Ω
terminating resistor between the Tx/Rx+ and Tx/Rx- terminals on the
last controller in the network (the one furthest away from Hecu).
Earth
Signals (+/-)
GND
AWG 20/22
Device
1
Device
2
Device
n
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Productinformatie
| Merk | Carel |
| Model | Hecu |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10743 MB |
