Gefran GRS-H 15A, GRS-H 25A, GRS-H 30A, GRS-H 40A, GRS-H 50A Data Sheet

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GRS-H 15/25/30/40/50/60/75/90/120A

ULTRA-COMPACT STATIC POWER UNITS WITH DC / AC LOGIC CONTROL

Main applications

• Extrusion, injection, blow moulding, thermoforming of plastics

• Vulcanization of rubber

• Synthetic fibre production and polymerisation

• Packing and packaging

• Dryers for ceramics and building elements

• Industrial electric ovens

• Food processing plants

• Chemical and pharmaceutical industry

Main features

• Ultra-compact dimensions from 15A to 120A

• DIN rail and panel mounting

• Switching at zero voltage changeover

• Input command from DC/AC logic signal with push-in connectors; signalling leds

• Cage clamps for power cables

• Load voltage 480V, 600V AC

• Thermal alarm option with led and alarm output

• Interrupted load option with led and alarm output

• Internal overvoltage protection

PROFILE

Correct management of electrical heating elements for industrial heating applications requires robust, safe, interferencefree, fast and diagnostically capable static contactors. The range of static contactors with GRS-H heatsink meets all these requirements, with current ratings from 15 to 120 Amperes and voltages up to 600 V AC, with extremely compact size in every single current level. The thermal design of all models guarantees the continuous supply of the rated current at an ambient temperature of 40°C through high efficiency heat sinks, assisted by fans for the 90A and 120A models. The derating curves show how higher current values can also be achieved, at lower temperatures, and illustrates the possibility of mounting various devices packed together on the DIN rail.

GRS COMMAND SIGNAL CONNECTION

The GRS-H series can be controlled by DC and AC logical signals managed through push-in connectors for a faster and easier connection, even without tools. The ON / OFF status of the static device is always displayed by a green LED on the front panel, for an immediate view of its operation.

POWER CONNECTIONS

Both the line voltage terminal available on the upper part of the device and the load terminal on the lower part are of the “cage” type, which offers the best and safest seal even for cables of different cross-sections, whether mounted with a cable lug or simply stripped.

DIAGNOSTICS AND ALARMS

It is increasingly vital for operators and maintainers to recognize possible anomalies in the system immediately and solve them quickly in order to ensure the efficiency and profitability of machinery and plants. The GRS-H series offers a series of diagnostic

information associated with a physical alarm output with voltage-free or PNP-type isolated contact. The thermal alarm is triggered if heat dissipation exceeds a critical threshold, signalling it with a yellow led on the front panel, interrupting the power supply and triggering the alarm output (NO or NC). This function is always present for current levels from 50 A up to 120 A, and is available as an option for other current levels. The absence of current on the load (for models with DC control) is indicated by a red led on the front panel and by the activation of the alarm output, as well as by the absence of line voltage. Alarm output status is memorized: in the presence of a 24 V DC auxiliary power supply, the alarm will be memorized even in the event of an OFF command. The alarm is reset when normal operating conditions are restored, or when the 24 V DC auxiliary power supply is switched off and on again.

TECHNICAL DATA

Main features

Category of use: AC51 Rated working voltage

- 480Vac (max. range 24...530Vac)

- 600Vac (max range 24 ... 660Vac)

Rated frequency: 50/60Hz Non-repetitive voltage:

• 1200Vp for model with rated voltage 480Vac

• 1400Vp for model with rated voltage

600Vac Switching voltage for zero: < 20V Activation time: = 1/2 cycle Deactivation time: = 1/2 cycle Potential drop at rated current:

= < 1,2Vrms

Power factor = 1

Control input

- DC INPUT (Type “D”): Max. input: < 9mA @32V Max. reverse voltage: 36Vdc Control voltage: 6...32Vdc Activation voltage: > 5,1Vdc Deactivation voltage:< 3Vdc

- AC INPUT (Type “A”): Control voltage: 20...260 Vac/Vdc INSTALL FUSE (3A MAX) ON THE CONTROL INPUT CIRCUIT Activation voltage: > 15Vac/Vdc Deactivation voltage: < 6Vac/Vdc Current draw: <= 8 mAac/dc @ 260

Vac/Vdc

alarm output option (type “D” input Version)

A load or line failure or an overtemperature alarm commands:

- Options 1/2/5: one voltage-free contact (solid state N.C or N.O.), max. properties:

- N.O. version 30V-150mA conduction

resistance: ≤ 1Ω

- N.C. version 30V-50mA conduction

resistance: ≤ 15Ω

- Option 3: two normally inactive (parallelable) PNP digital outputs, one for load failure and the other for overtemperature (properties: Imax =150mA Vout= + V DC power supply

-1V).

Maximum interrupted load alarm trip delay < 400ms Maximum cable length between GRS-H and load for correct load fault diagnostics < 25m

alarm output option (type “a” input Version)

The over-temperature alarm commands a voltage-free contact (solid state N.C.), max. properties:

30V-50mA conduction resistance: ≤ 15 Ω

outputs

GRS-H 15

Rated current: 15 A@40°C in continuous service Non-repetitive overcurrent t=20 ms: 620A I2t for blowout: ≤ 1800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 25

Rated current: 25 A@40°C in continuous service Non-repetitive overcurrent t=20 ms: 620A I2t for blowout: ≤ 1800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 30

Rated current: 30 A@40°C in continuous service Non-repetitive overcurrent t=20 ms: 620A I2t for blowout: ≤ 1800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 40

Rated current: 40 A@40°C in continuous service Non-repetitive overcurrent t=20 ms: 620A I2t for blowout: ≤ 1800A2s dV/dt critical with output deactivated: 1000 V/µs

GRS-H 50

Rated current: 50 A@ 40°C in continuous service Non-repetitive overcurrent t=20 ms: 1600A I2t for blowout: ≤ 12800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 60

Rated current: 60 A@ 40°C in continuous service Non-repetitive overcurrent t=20 ms: 1600A I2t for blowout: ≤ 12800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 75

Rated current: 75 A@ 40°C in continuous service Non-repetitive overcurrent t=20 ms: 1600A I2t for blowout: ≤12800A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 90

Rated current: 90A@ 40°C in continuous service (complete with specified fan) Non-repetitive overcurrent t=20 ms: 1500A I2t for blowout: ≤ 11250A2s dV/dt critical with output deactivated: 1000V/µs

GRS-H 120

Rated current: 120A@ 40°C in continuous service (complete with specified fan) Non-repetitive overcurrent t=20 ms: 1500A I2t for blowout: ≤ 11250A2s dV/dt critical with output deactivated: 1000V/µS

THERMAL PROTECTION

(Optional, always present in GRS-H with

current size ≥ 50A):

The temperature of the SCR module is constantly monitored inside the device. When the maximum temperature threshold of the internal SCR is exceeded, current conduction to the load is interrupted and the yellow thermal protection LED comes on to signal the condition.

Isolation

Rated isolation voltage input/output:

4000VACrms 1min

Ambient conditions

• Working temperature:

from 0 to 80°C (according with heat sink curves)

• Max. relative humidity:

90% non-condensing at 40°C

• Max. installation altitude: 6600ft above sea level

• Pollution level : 2

• Storage temperature:

-20..+85°C

Installation notes

Use the extra-rapid fuse shown in the catalogue according to the connection example supplied. Applications with static units must also include a safety circuit breaker for disconnecting the power line from the load. To obtain high reliability of the device,

• Horizontal distance between one device and another at least 20mm (in the event of installation at shorter distances, see derating curves). Make sure that the cable ducts do not reduce these distances; in this case, mount the units overhanging the panel, so that the air can flow vertically

on the heat sink without hindrance. it is essential to install it correctly inside the panel in order to obtain adequate heat exchange between the heat sink and the surrounding air under conditions of natural convection. Mount the device vertically (maximum 10° inclination from the vertical axis)

• Vertical distance between a device and the panel wall >100mm

• Horizontal distance between a device and the panel wall at least 20mm

• Vertical distance between one device and another at least 300mm.

Limits of use

• Ambient temperature limits, depending on derating curves.

• Need for air exchange with the outside or an air conditioner to transfer the dissipated power to the outside of the panel.

• Installation limits (distances between devices to ensure dissipation under natural convection conditions)

• Maximum voltage limits and derivative of the transients present on the line, for

DIMENSIONS AND MOUNTING MEASUREMENTS

which the static unit provides internal protection devices (depending on the models).

• Presence of leakage current < 3mA (max. value with nominal voltage and junction temperature of 125°C).

Model 15-25A 30A 40-50A 60-75A 90-120A

Weight [g] 194 237 388 688 796

Notes:

The dimensions are representative of all models of the series (command “D” type, “A” type and with options)

DIN RAIL FIXING

DIN rail coupling sequence DIN rail release sequence

(*) Use of a slotted screwdriver with a max. diameter of 6mm is recommended

SCREW DRIVER (*)

PANEL FIXING

DESCRIPTION OF CONNECTIONS

GRS-H...D-0 GRS-H...D-1 GRS-H...D-2

Description of terminal/connector versions with type “D” input

Power terminals (common to all versions)

Rif. Description Notes

1/L1 Line Connection

2/T1 Load Connection

Signal connector version without options (GRS-H...D-0)

3/A2- GND Control input ON/OFF Control input ground

4/A1+ +Vdc control input ON/OFF Range from 6 to 32 Vdc, Imax <9 mA a 32V

Signal connector version with options “1 “ and “2 “ type (GRS-H…D-1/2)

GND for power supply and control input

3/A2-

ON/OFF

4/Us + Vdc power supply

5/A1+ +Vdc control input ON/OFF Range: ON from 5 to 32Vdc, Imax <0,5 mA a 32V OFF< 1,8V

GND Control input ON/OFF

6/A2-

(common to terminal 3/A2-)

GND Control input ON/OFF

6/A2-

(common to terminal 3/A2-)

7/AL

Alarm output:

- Interrupted load

- Line voltage absent

8/AL

- Overtemperature

Control input ground

Power supply for optional functions (Range from 6 to 32 V DC, Imax < 14 mA at 32V

GRS-H-90..120A-..FAN63: Power supply options + Fan (Range from 20 to 27 V DC, Imax <150 mA at 24V with Fan active)

Additional connection to be used only as GND for the control signal

Version with option 1 Version with option 2

Additional connection to be used only as GND for the control signal

Solid state N.O. contact Imax =150mA Vmax = 30 V DC/25V AC

Z_closed < 1 Ω Z_open > 1 MΩ

Solid state N.C. contact Imax = 50mA Vmax = 30 Vdc/25Vac

Z_closed < 15 Ω Z_open > 1 MΩ

Note: The connections are also representative of 90-120A models

DESCRIPTION OF CONNECTIONS

GRS-H...D-3 GRS-H...D-5

Description of terminal/connector versions with type “D” input

Signal connector version with option type “3” (GRS-H…D-3)

Rif. Description Notes

3/A2- GND for power supply and control input

ON/OFF

4/US + Vdc power supply

5/A1+ +Vdc control input ON/OFF Range: ON da 5 a 32Vdc, Imax <0,5 mA a 32V OFF< 1,8V

6/TA Overtemperature alarm output

Alarm output: interrupted load or line

7/FA

voltage absent

8/A2-

3/A2-

5/A1+ +Vdc control input ON/OFF Range: ON from 5 to 32Vdc, Imax <0,5 mA a 32V OFF< 1,8V

6/A2-

GND Control input ON/OFF (common to terminal 3/A2-)

Alarm output connector version with type “5” option (GRS-H...A-5)

GND for power supply and control input ON/OFF

4/Us + Vdc power supply

GND Control input ON/OFF (common to terminal 3/A2-)

7/AL

Overtemperature alarm output

8/AL

Ground control input

Power supply for optional functions (Range from 10 to 32 Vdc, Imax < 14 mA a 32V)

GRS-H-90..120A-..FAN63: Power supply options + Fan (Range from 20 to 27 V DC, Imax <150 mA at 24V with Fan active)

PNP output normally not active (1) Imax =150mA Vout: + V DC power supply -1V

Additional connection to be used only as GND for the control signal

Power supply for optional functions (Range from 6 to 32 V DC, Imax < 14 mA at 32V)

GRS-H-90..120A-..FAN63: Power supply options + Fan (Range from 20 to 27 V DC, Imax <150 mA at 24V with Fan active)

Additional connection to be used only as GND for the control signal

Solid state N.C. contact Imax = 50mA Vmax = 30 Vdc/25Vac

Z_closed < 15 Ω Z_open > 1 MΩ

(1): The normally inactive PNP outputs can be connected to each other and obtain a single alarm output

Note: The connections are also representative of 90-120A models

DESCRIPTION OF CONNECTIONS

GRS-H...A-0 GRS-H...A-5

Description of terminal versions with type “A”input

Rif. Description Notes

1/L1 Line Connection

2/T1 Load Connection

3/A2

Control input ON/OFF in AC

4/A1

5/AL

Overtemperature alarm output

6AL

Alarm output connector version with type “5” option (GRS-H...A-5)

Vac/Vdc input (Range 20 to 260Vac/Vdc, Imax < 8 mA)

Solid state N.C. contact Imax = 150 mA Vmax = 30 Vdc/25Vac

Z_closed < 1 Ω Z_open > 1 MΩ)

Note: The connections are also representative of 90-120A models

LED STATUS DESCRIPTION

ON LED is always present,

Note:

Temp Alarm and Fault Alarm LEDs are optional

STATUS

SCR OFF, no alarm OFF OFF OFF

SCR ON, no alarm ON OFF OFF

SCR ON, Alarm output active ON OFF ON

Control signal active, SCR forced off for

overtemperature protection

Control signal active, SCR forced off for overtemperature

protection, Alarm output active

SCR off, Alarm output active for interrupted load

(alarm is stored, Status only possible with GRS-H with Type D

input and options 1/2/3)

LED Control

(Green)

OFF ON OFF

OFF ON ON

OFF OFF ON

LED Temp Alarm

(Yellow)

LED Fault Alarm/Out

Alarm (Red)

TYPE OF OPERATION

Control input

Load voltage

Power supplied = Installed power fot TC / T

Control input

green LED

V = Load voltage

Thermal protection activation

yellow LED yellow LED

Logic voltage output command GRS-H thermal protection

THERMAL ALARM

Models with thermal alarm Models with thermal alarm and FAN63 option

START

Is the

heat sink

temperature

higher than the

threshold?

Yes

Fan ON

heat sink

temperature

lower than the

threshold?

Fan OFF

Is the

No No

Yes Yes

Is the

heat sink

temperature

higher than the

maximum

limit?

SSR: OFF LED Temp Alarm: ON Alarm output: ON

Is the

heat sink

temperature

lower than the

maximum

limit?

Yes

SSR: ON LED Temp Alarm: OFF Alarm output: OFF

START

Is the

heat sink

temperature

higher than the

maximum

Yes

SSR: OFF LED Temp Alarm: ON Alarm output: ON

heat sink

temperature

lower than the

maximum

SSR: ON LED Temp Alarm: OFF Alarm output: OFF

limit?

Is the

limit?

Yes

ALARM LOAD INTERRUPTED GRS-H with V DC command (Control type “D” with options)

CONNECTION EXAMPLES

Digital output (*)

Controller

Fuse Load

Phase

Neutral

Ground

Single-phase connection - GRS-H with Vdc command input (Type “D” input )

Three-phase Wye connection with neutral - GRS-H with V DC command input (“D” type input )

Fuse Fuse Fuse

Neutral

L1 Phase

L2 Phase

L3 Phase

Ground

Digital output (*)

Controller

Load

(*) Or relay output with V AC output voltage (Use GRS-H with Vdc command input Type “A” input )

CONNECTION EXAMPLES

Line

Three-phase Triangle or Star connection without neutral on two phases - GRS-H with V DC command input (“D” type input )

Digital output (*)

Fuse Fuse

Controller

Wye

connection

L1 Phase

L2 Phase

L3 Phase

Ground

Delta

connection

(*) Or relay output with V AC output voltage (Use GRS-H with Vdc command input Type “A” input )

Connection example for GRS-H with V DC command with isolated contact alarm output option (Options 1 and 2)

Fuse

Alarm output (Option 1/2) Isolated contact Max. 30Vdc/25Vac N.O. : Max 150mA N.C. : Max 50mA

Supply 24Vdc (6 to 32 Vdc)

Load

ON / OFF Control signal (6 to 32 Vdc)

Notes on connection of alarm output:

- Parallel connection with multiple GRS-Hs, with the N.O. option (Option = 1)

- Serial connection with multiple GRS-Hs, with the N.C. option (Option = 2)

Alarm output (Option 1/2) Isolated contact Max. 30Vdc/25Vac N.O. : Max 150mA N.C. : Max 50mA

Supply 24Vdc (6 to 32 Vdc)

ON / OFF Control signal (6 to 32 Vdc)

Load

CONNECTION EXAMPLES

Line

Connection example for GRS-H with V DC command with PNP alarm output option (Option 3)

Line Line

Alarm output (Opz. 3) PNP contact Max. 150mA

Supply 24Vdc (6 to 32 Vdc)

ON / OFF Control signal (6 to 32 Vdc)

Notes of connection of alarm output:

- Parallel connection with multiple GRS-Hs with output option usually turned OFF (Option = 3 )

Alarm output (Opz. 3) PNP contact Max. 150mA

Supply 24Vdc (6 to 32 Vdc)

Load Load

Connection example for GRS-H with V DC control with thermal alarm option (Option 5)

ON / OFF Control signal (6 to 32 Vdc)

Alarm output (Option 5) Isolated contact Max. 30Vdc/25Vac N.C. : Max 50mA

Supply 24Vdc (6 a 32 Vdc)

Load

ON / OFF Control signal (6 a 32 Vdc)

Notes on connection of alarm output:

- Serial connection with multiple GRS-Hs, with the N.C. option (Option = 5)

Alarm output (Option 5) Isolated contact Max. 30Vdc/25Vac N.C. : Max 50mA

Supply 24Vdc (6 a 32 Vdc)

ON / OFF Control signal (6 a 32 Vdc)

Load

CONNECTION EXAMPLES

Line

Connection example for GRS-H with V AC control with thermal alarm option (Option 5)

Alarm output (Option 5) Isolated contact Max. 30Vdc/25Vac 150mA

ON / OFF Signal Vac control (20 to 260 Vac)

Fuse (3A max) Fuse (3A max)

Load

Alarm output (Option 5) Isolated contact Max. 30Vdc/25Vac 150mA

ON / OFF Signal Vac control (20 to 260 Vac)

Notes on connection of alarm output:

- Serial connection with multiple GRS-Hs, with the N.C. option (Option = 5)

Load

TABLE OF TERMINALS AND CONDUCTORS

Size

15A

25A

30A

40A

50A

60A

75A

90A

120A

CONTROL TERMINAL POWER TERMINAL

Type of

connection

Rigid/flexible/cable

lug conductor cross

section

Stripping length 8 mm

Rigid/flexible/cable

lug conductor cross

section