HIMA HIMatrix MI 24 01 Safety Related Controller Module

HIMA HIMatrix MI 24 01 Safety Related Controller Module

Product core positioning

MI 24 01 is a modular safety related input module launched by HIMA (Paul Hildebrandt GmbH+Co KG) in Germany, specifically designed for the HIMatrix F60 modular control system. Its core function is to achieve safe acquisition and fault monitoring of 24 analog or digital signals, suitable for scenarios with high safety requirements such as petrochemical, energy, and process industries (such as SIL 3 safety circuits). The module supports software configuration as analog input (0/4~20 mA current signal) or digital input (proximity switch, safety contact, etc.), with safety features such as fault self diagnosis, signal isolation, overcurrent/overvoltage protection, and complies with international safety standards such as IEC 61508 (SIL 3), EN 954-1 (Cat. 4), and EN ISO 13849-1 (PL e).

Key technical specifications

1. Core input capability

Category specific parameters

The number of input channels is 24, which cannot be used as both analog and digital signals at the same time. It needs to be configured independently for a single channel

Analog Input (AI) - Signal Type: 0/4~20 mA Unidirectional Current Signal

-Input resistance: 200 Ω

-Measurement accuracy: ± 0.2% full range at 25 ℃, ± 0.5% full range over full temperature range

-Resolution: 12 bits

-Sampling time: Approximately 45 μ s per channel, refresh rate synchronized with F60 system cycle

Digital Input (DI) - Compatible with EN 60947-5-6 standard proximity switches, safety proximity switches, contacts with resistance wiring

-Nominal input resistance: 674 Ω

-Short circuit current (proximity switch power supply): 12.2 mA

-Response delay: 2 x F60 cycles in L → H direction, H → L direction needs to be combined with filtering configuration

Power output is divided into 3 independent power supply groups (corresponding to channels 1-8, 9-16, 17-24), with a maximum output current of 200 mA per group. It supports switching between 8.2 VDC/26 VDC and has short-circuit protection (restart after 30 seconds of overload, retry after 60 seconds of continuous overload)

2. Physical and environmental parameters

Range of environmental parameter specifications

Working temperature: 0 ℃~+60 ℃ (normal environment inside industrial control cabinet)

Storage temperature -40 ℃~+85 ℃ (for transportation and inventory scenarios)

Protection level module body IP20 (requires overall protection with F60 cabinet, and additional IP54 enclosure for explosion-proof scenarios)

Altitude limit<2000 meters (no need to downgrade)

Pollution Level II (IEC/EN 61131-2, applicable to minor pollution in industrial environments)

Size and Weight - Size: 6 RU height, 4 HP width (compatible with F60 standard rack)

-Weight: 580 g

The power supply requirement is 24 VDC (-15%~+20% fluctuation), provided by the F60 system power module, with a typical power consumption of 5.5 W (no-load) and a maximum power consumption of 16 W (full load)

3. Safety and Compliance

Specific compliance items of certification standards

Functional Safety Standard - IEC 61508: SIL 3 (Safety Integrity Level)

-EN 954-1: Cat. 4 (safety category)

-EN ISO 13849-1: PL e (performance level)

-ATEX/IECEX: Zone 2 hazardous area adaptation (to meet EN 60079-15 enclosure requirements)

Electromagnetic compatibility (EMC) EN 61000-4-2 (electrostatic discharge), EN 61000-4-5 (surge), EN 55022 (radiated emission Class A)

Electrical Safety IEC/EN 61131-2 (Protection Class III) UL 61010-1、CSA C22.2 No. 61010-1

Core functions and fault handling

1. Signal conditioning and safety monitoring

Filtering and anti-interference: Analog input supports software configuration of low-pass filtering (to suppress high-frequency noise), while digital input can enable "noise blanking" (the signal needs to last for 2 system cycles to be recognized to avoid false triggering by surges, but it will increase response delay);

Fault self diagnosis:

Channel level fault: Monitor open circuit (signal<lower limit value), short circuit (signal>upper limit value), abnormal A/D conversion, measurement value exceeding the safe accuracy range. After triggering, set the corresponding error code and light up the ERR light;

Module level faults: power supply abnormality, data bus fault, temperature exceeding limit (FTT test), triggering to cut off power supply to the fault group and report to the system;

Safety response logic: When there is an analog fault, set AI. Error Code>0. When there is a digital fault, output a low level according to the "power loss trip" principle to ensure that the system enters safe mode in the event of a fault.

2. Status indication and operation

LED indicator light status and meaning

RUN (green) constantly on: module power supply is normal; Extinguished: No power supply or module failure

ERR (red) constantly on: module or channel failure; Extinguish: No malfunction

I 1-24 (yellow) constantly on (DI mode): channel activated (powered on); Always on (AI mode): Measurement value reaches the upper limit; Extinguished: Channel not activated or reaching lower limit

Installation and Configuration

1. Physical installation

Rack adaptation: Only supports HIMatrix F60 modular rack, installed in slots 3-8 (slot 1 for power module, slot 2 for CPU module);

Installation steps:

Disconnect the system power and remove the cables from the front panel of the rack;

Insert the module along the upper and lower rails of the rack, press the front panel until it clicks into place with the back panel socket;

Fix the upper and lower ends of the module with screws and reconnect the cables;

Explosion proof installation (Zone 2): It needs to be installed in an enclosure with a protection level of IP54 or above, ensuring heat dissipation (maximum power consumption of the module is 16 W), and using PELV/SILV level 24 VDC power supply.

2. Wiring specifications

Cable requirements: Both analog and digital inputs must use shielded twisted pair cables, with the shielding layer grounded at one end (controller side), and a total resistance of ≤ 250 Ω (analog) and ≤ 50 Ω (digital);

Pin allocation: 24 channels are divided into 3 groups, each group of pins including "power supply (Sx+), ground (Ix -), digital input (DIx+), analog input (AIx+)". Example (channels 1-8):

Pin Identification Function Description

A 01 S1+channels 1-8 power output

A 02 I1- Channel 1 Grounding

B 01 DI1+Channel 1 Digital Input

B 02 AI1+Channel 1 Analog Input

3. Software configuration

Tool adaptation:

System firmware<V7: configured using ELOP II Factory;

System firmware ≥ V7: Use SILworX (recommended, supports graphical interface);

Core configuration items:

Channel Type (AI/DI): Single channel independent setting Channel Used [BOOL] (1=enabled, 0=disabled);

Threshold configuration: Limit Value LOW/HIGH (DI mode: effective high and low level range; AI mode: under/over range threshold), Hysteresis LOW/HIGH (DI mode: switching threshold);

Power supply settings: Transmitter Voltage (8.2 V/26 V switching per group), Transmitter Used [BOOL] (whether to use module power supply).

Ordering and matching

1. Core components and spare parts

Component Name Model/Part Number Description

MI 24 01 module 98 2200115 24 channel safety input module (with normal coating, non optional uncoated version)

Two wire transmitter protection module 99 4703202 (H 7032) is compatible with two-wire transmitters and has SIL 3 safety protection

Three wire transmitter protection module 99 4703302 (H 7033) is compatible with three wire transmitters and has SIL 3 safety protection

The terminal plug does not have a clear part number for the module front board wiring terminal, and needs to be ordered separately

2. Documentation and technical support

Essential documents:

《HIMatrix System Manual Compact Systems》（HI 800 141 E）；

《HIMatrix Safety Manual》（HI 800 023 E）；

SILworX Online Help or ELOP II Factory Online Help;

Technical Support: HIMA Germany Headquarters (Phone+49 6202 709-0, Email) info@hima.com ）Or regional agents (such as document provider SDS Automatyka).

Maintenance and lifecycle

Regular maintenance: Conduct precision calibration (analog input) and functional verification (safety circuit proof test) every 10 years;

Fault replacement: After a module failure, it needs to be replaced as a whole (cannot be repaired on site). When replacing, the system power supply needs to be disconnected, and the same model or HIMA certified replacement model should be used;

Scrap disposal: It is necessary to dispose of industrial electronic waste in accordance with the regulations. You can contact HIMA to sign a disposal agreement.

Key precautions

Channel configuration restrictions: 24 channels cannot be mixed into AI/DI mode and must be configured uniformly or grouped;

Power overload protection: Each group can provide a maximum of 200 mA of power. After overload, it will automatically restart within 30 seconds. If the overload persists, it will retry within 60 seconds. It is necessary to avoid connecting too many high-power devices to a single group;

Explosion proof scenario requirements: Zone 2 installation must meet EN 60079-15 enclosure protection (IP54+) and be labeled with "power-off operation only";

Software compatibility: The ELOP II Factory project and SILworX project are non editable, and compatibility needs to be confirmed before upgrading firmware.