12
Controller Setting.
Carel PJEZC Electronic Controller.
The most complete solution for low temperature ventilated units, with three relays for complete
control of the compressor, fan and defrost functions. The three relays are included in the very
compact case in the versions with 230 V or 115 V power transformer, without compromising
the performance or reliability of the product.
Panel installation using 2 rear brackets
• insert the instrument in the opening (phase 1);
• secure the instrument by sliding the brackets in the guides on the instrument until compressing
them against the panel (phase 2);
Figure 6. Controller installed method
Electrical Connections
WARNINGS:
• the electrical connections must only be completed by a qualified electrician;
• a power supply other than the type specified may seriously damage the system;
• separate as much as possible the probes and digital input signal cables from the cables
carrying inductive loads and power cables to avoid possible electromagnetic
disturbance. Never lay power cables(including the electrical 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 or similar);
• reduce the path of the probe and sensor cables as much as possible, and avoid spiral
paths that enclose power devices. The probes must be connected using shielded cables
(minimum cross-section of each wire: 0.5 mm
2
);
• avoid direct contact with internal electronic components;
• connection errors (and connections other than those indicated in this manual) may
involve danger to the safety of the users and cause faults on the instruments and the
components connected;
• fit the unit with all the electromechanical safety devices required to guarantee correct
operation and the complete safety of the user.
Summary of Contents for SMART 7 STI022LR404A2
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