25

Carlo Gavazzi Ltd.

RGC2, RGC3

RGC2, RGC3 DS ENG

05/10/20

RGC..M Mode of Operation (continued)

Load Loss:

Detection of load loss is possible only with control ON. This alarm is issued in the absence of a load termination or an

open load on terminals T1, T2 and/or T3 for more than 120ms. When the load loss alarm is triggered, the SSR output is

not turned OFF as long as control voltage is present on the RGC..M. The fault condition is automatically restored once the

fault is cleared.

The RGC..M permits a total combined load and supply unbalance of 40%, where individually load unbalance shall not

exceed 40% and supply unbalance shall not exceed 15%. If these limits are exceeded erratic behaviour and false alarms

may be expected.

Mains Supply (L1, L2, L3)

Load Current (I1)

Load Current (I2)

Load Current (I3)

Auxiliary Output, NO (21-24)

Auxiliary Output, NC (21-22)

Supply Voltage (Us)

Control Voltage (A1, A2)

Green LED (Control & Supply)

Yellow LED (Load status)

Red LED (Alarm)

Alarm Output, NO (11-14)

Alarm Output, NC (11-12)

Note 1

Note 2

Note 2

Note 2

Supply

Voltage (Us)

Loss

Normal

Opera�on

SSR OFF

Normal

Opera�on

SSR ON

Load Loss condi�on on T1

(>120 ms)

with control ON

Load Loss condi�on on T2

(> 120 ms)

with control ON

Load Loss condi�on on T3

(> 120 ms)

with control ON

Load

restored,

conrol OFF

Load

restored,

conrol ON

Note 3

Note 1: For the AC external supply versions (RGC..A..A), the Auxiliary output, NC (21-22) will be closed only when the

external supply Us is present.

Note 2: Yellow LED and Auxiliary output is OFF if all the loads connected to the 3 poles T1, T2 and T3 are missing.

Note 3: The Load loss alarm will reset only with control ON.