gefran GRM-H 15 User Manual

819XX_MAN_GRM-H_11-2022_ENG_pag. 6
Use the extra-rapid fuse shown in the catalogue
according to the connection example supplied.
Applications with uninterruptible power supply
units must also include a safety circuit breaker
for disconnecting the power line from the load.
To obtain high device reliability, 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 condi-
tions of natural convection.
Mount the device vertically (maximum 10° incli-
nation 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 100mm.
•
Horizontal distance between one device and
another at least 20mm (in the event of installa-
tion 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.
limitations of use
•
Ambient temperature limits, depending on der-
ating 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 which the
static unit provides internal protection devices
(depending on the models).
•
Presence of leakage current < 3mA (max.
value with nominal voltage and junction tem-
perature of 125°C / 257°F).
1.2. Installation

gefran GRM-H 15 Specifications

General

Brand	gefran
Model	GRM-H 15
Category	Controller
Language	English

Summary

Preliminary Instructions

Profile

Describes the GRM-H series power control capabilities, features, and applications.

Installation Guidelines

Details general installation procedures, mounting requirements, and operational limitations.

Installation and Connection

Dimensions and Mounting Measurements

Provides physical dimensions and mounting details for various GRM-H models.

DIN Rail Fixing

Explains the step-by-step process for mounting the device onto a DIN rail.

Panel Fixing

Details the method for securing the device using panel mounting hardware.

Front View

Illustrates the front panel layout, including indicators and controls.

Pinout and Analog Control

Shows terminal connections and pin assignments for analog input.

Load Wiring

Provides wiring diagrams for connecting various types of loads to the GRM-H.

Terminal and Conductor Table

Specifies conductor sizes, stripping lengths, and tightening torques for terminals.

Fan Maintenance

Instructions for cleaning and maintaining the device's cooling fan.

Configuration Options

Device Configuration Overview

Overview of methods for configuring the GRM-H device settings.

Gefran NFC Application

Using the NFC app for smartphone-based device configuration and data transfer.

Configuration Software and Real-time Checks

Connecting to PC for configuration, diagnostics, and real-time data acquisition.

IO-Link Configuration

Configuring the device via the IO-Link communication protocol.

Front Panel Key Functions

Using the front panel key and LEDs for basic settings and calibration.

LED Status Indicators

LED Indicator Functions

Explains the meaning of different LED states (STEADY, FLASHES) for device status.

Parameter Descriptions

Input Parameters

Descriptions for analog input type, scale limits, and correction offset.

Load Current Value Parameters

Parameters for current reading offset and digital low-pass filter.

Line Voltage Value Parameters

Parameters for voltage reading offset and digital low-pass filter.

Values on Load

Parameters displaying RMS load current, voltage, and energy consumption.

Key Function Enabling

Enables or disables the physical button on the device front.

HB (Heat Break) Alarm

HB alarm threshold calibration, function, and enabling parameters.

Power Fault Alarms

Enables and configures Power Fault alarms (SSR_SHORT, NO_VOLTAGE, NO_CURRENT).

Thermal Protection Alarm

Displays SSR temperature and status for thermal protection.

SHORT_CIRCUIT_CURRENT Alarm

Sets number of restarts for short circuit and related parameters.

Input/Output Pin Functions

Configures functions for pins 13, 17, 19 as input or output.

Counter Parameters

HB alarms, overheat, and short circuit event counters.

Control Functions

Parameters for Dryout function, communication errors, and manual power.

Power Control Modes

Settings for trigger modes, soft start, current limit, and feedback.

Hardware and Software Information

Details on software version, identifiers, serial number, and options.

IO-Link Communication

IO-Link Protocol Overview

Overview of the IO-Link communication protocol and its use.

IO-Link Installation and Electrical Connections

Electrical installation guidelines and wiring for IO-Link connectivity.

Control Modes (IO-Link, SIO)

Explains IO-Link information, SIO mode, and control modes.

Process Data Mapping and Setting Data

Maps process data and lists system command values for IO-Link.

Technical Specifications

Input Specifications

Detailed specifications for analog and IO-Link inputs.

Measurement and I/O Specifications

Specifications for voltage/current measurement and I/O pin functions.

Derating Curves

Shows how current capacity is affected by ambient temperature.

Installation Distance Derating

Illustrates current derating based on horizontal installation distance.

Fuses, Accessories, and Fans

Lists recommended fuses, available accessories, and fan options.

EMC Standards and Safety

Lists EMC standards and safety requirements.

Certifications

Product Certifications

Lists the EU directives and standards the device complies with.