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AC/DC current monitoring in 1-phase mains

Monitoring relays - GAMMA series

16.6 to 400Hz

Fault latch

Zoom voltage 24 to 240V AC/DC

thresholds, timing for start-up suppression and tripping delay

separately adjustable and the following functions (selectable by means of

rotary switch)

OVER Overcurrent monitoring

OVER+LATCH Overcurrent monitoring with fault latch

UNDER Undercurrent monitoring

UNDER+LATCH Undercurrent monitoring with fault latch

WIN Monitoring the window between Min and Max

WIN+LATCH Monitoring the window between

Min and Max with fault latch

Green LED flashes: indication of start-up suppression time

Yellow LED ON/OFF: indication of relay output

Red LED ON/OFF: indication of failure

of the corresponding threshold

Red LED flashes: indication of tripping delay

of the corresponding threshold

4. Mechanical design

Self-extinguishing plastic housing, IP rating IP40

Mounted on DIN-Rail TS 35 according to EN 60715

Mounting position: any

2 x 0.5 to 1.5mm² with/without multicore cable end

2 x 2.5mm² flexible without multicore cable end

5. Input circuit

Supply voltage:

24 to 240V AC/DC terminals A1-A2 (galvanically separated)

Tolerance:

24 to 240V DC -20% to +25%

24 to 240V AC -15% to +10%

Rated frequency:

24 to 240V AC 48 to 400Hz

Drop-out voltage: >15% of the supply voltage

Overvoltage category: III (in accordance with IEC 60661-1)

Rated surge voltage: 4kV

Rated voltage: 250V AC

Switching capacity (distance <5mm): 750VA (3A / 250V AC)

Switching capacity (distance >5mm): 1250VA (5A / 250V AC)

Fusing: 5A fast acting

Mechanical life: 20 x 10

operations

Electrical life: 2 x 10

at 1000VA resistive load

Switching frequency: max. 60/min at 100VA resistive load

max. 6/min at 1000VA resistive load

(in accordance with IEC 60947-5-1)

Overvoltage category: III (in accordance with IEC 60664-1)

5A AC/DC terminals K-I3(+)

Overload capacity:

20mA AC/DC 250mA

1A AC/DC 3A

5A AC/DC 10A

Input resistance:

 20mAAC/DC  2.7Ω

 1AAC/DC   47mΩ

 5AAC/DC   10mΩ

Switching threshold:

Max 10% to 100% of I

Frequency response: -10% to +5% (16.6 to 400Hz)

Adjustmentaccuracy: ≤5%(ofmaximumscalevalue)

Voltage influence: -

Temperatureinfluence: ≤0.05%/°C

9. Ambient conditions

Ambienttemperature: -25to+55°C

(in accordance with IEC 60068-1)

      -25to+40°C(inaccordancewithUL508)

Storagetemperature: -25to+70°C

Shock resistance: 15g 11ms

(in accordance with IEC 60068-2-27)

the measured current exceeds the value adjusted at the MIN-regulator.

When the measured current exceeds the value adjusted at the MAX-

regulator, the set interval of the tripping delay (DELAY) begins (red LED

MAX flashes). After the interval has expired (red LED MAX illuminated),

the output relays switch into off-position (yellow LED not illuminated).

The output relays again switch into on-position (yellow LED illuminated)

when the measured current falls below the value adjusted at the MAX-

regulator (red LED MAX not illuminated). When the measured current

falls below the value adjusted at the MIN-regulator, the set interval of the

tripping delay (DELAY) begins again (red LED MIN flashes). After the

current remains above the MAX-value longer than the set interval of

the tripping delay, the output relays remain in the off-position even if the

measured current falls below the value adjusted at the MAX-regulator.

After resetting the failure (interrupting and re-applying the supply

voltage), the output relays switch into on-position and a new measuring

cycle begins with the set interval of the start-up suppression (START).

When the supply voltage U is applied, the output relays switch into

greater than the maximum value.

Overcurrent monitoring (OVER, OVER+LATCH)

When the measured current exceeds the value adjusted at the MAX-

regulator, the set interval of the tripping delay (DELAY) begins (red LED

MAX flashes). After the interval has expired (red LED MAX illuminated),

the output relays switch into off-position (yellow LED not illuminated).

The output relays again switch into on-position (yellow LED illuminated),

when the measured current falls below the value adjusted at the MIN-

regulator (red LED MAX not illuminated).

If the fault latch is activated (OVER+LATCH) and the measured current

Undercurrent monitoring (UNDER, UNDER+LATCH)

When the measured current falls below the value adjusted at the MIN-

regulator, the set interval of the tripping delay (DELAY) begins (red LED

MIN flashes). After the interval has expired (red LED MIN illuminated),

the output relays switch into off-position (yellow LED not illuminated).

The output relays again switch into on-position (yellow LED illuminated),

when the measured current exceeds the value adjusted at the MAX-

regulator.

set interval of the start-up suppression (START).

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Range 5A, supply voltage 24V AC/DC without fault latch