HIRSCHMANN GRS1042-AT2ZSHH00Z9HHSE2A99-992 belongs to the GREYHOUND GRS1040 series module full-gigabit industrial managed switches. Designed for harsh industrial Ethernet environments, this fanless 19-inch rack-mountable device runs the professional HiOS industrial switch operating system and delivers comprehensive Layer 2 switching capabilities, with optional Layer 3 routing expansion.
The base port configuration includes 10 Gigabit Ethernet copper ports plus 2 SFP fiber slots compatible with 1G/2.5G speeds. Two expansion slots for media modules are integrated into the chassis; each module adds an additional 8 Gigabit ports, enabling a maximum of 28 Gigabit service ports on the unit. Equipped with dual hot-swappable power supply slots, the switch accepts wide-range AC/DC input and supports PoE+ power output. Its hardware holds multiple industry certifications for rail transit, transformer substations and Class II hazardous explosive areas, making it suitable for constructing automation communication networks requiring long-term uninterrupted operation.
Product Advantages
- Modular flexible expansion architecture. The base ports can be flexibly expanded with copper and fiber ports via GMM series media modules. Network points can be expanded on-site without replacing the whole unit, cutting subsequent renovation costs.
- Dual hot-swappable power supply design. The two power feeds operate independently; service continuity is maintained if one power path fails. Power modules can be replaced online, drastically shortening downtime for maintenance.
- Hardware with an ultra-wide operating temperature range of -40°C to +70°C. The fanless chassis eliminates heat dissipation failures caused by dust clogging, ideal for harsh environments including outdoor sites, enclosed high-temperature cabinets and low-temperature cold storage rooms.
- Comprehensive industrial compliance certifications. It complies with IEC61850 for substations, EN50121 for rail transit and Class 1 Div.2 hazardous area standards, eliminating extra compliance modifications for multi-industry projects.
- Robust security management features of the HiOS operating system. It supports port isolation, access control lists (ACL), 802.1X authentication and storm suppression to defend against industrial network malware and unauthorized access risks.
- Multiple convenient operation and maintenance interfaces including front-mounted SD card slot, USB port and V.24 console port. One-click backup of configuration files and bulk parameter deployment for multiple devices are supported to greatly boost efficiency during mass network deployment and commissioning.
- 2.5G uplink SFP slots are compatible with standard gigabit optical modules, accommodating existing legacy fiber links while reserving headroom for future bandwidth upgrades and extending equipment service life.
- The unit meets top-tier industrial standards for vibration resistance, electrostatic discharge (ESD) immunity and electromagnetic compatibility (EMC). No packet loss or intermittent port disconnections occur when deployed near factory variable-frequency equipment or high-voltage switchgear.
Product Specifications
Hardware Specifications
Fixed base ports: 10 × 10/100/1000 Mbps RJ45 copper ports, 2 × 1G/2.5G SFP fiber slots
Expansion capability: 2 external media module slots; each module provides 8 Gigabit ports, with a maximum of 28 Gigabit ports for the complete unit
Power architecture: Dual independent hot-swappable power slots; HH high-voltage version supports 60–250 VDC / 110–240 VAC; base power consumption of the unit is 32 W
Physical mounting: Standard 19-inch rack-mount design, fanless sealed metal enclosure
O&M interfaces: SD card slot, USB auto-configuration port, V.24 console serial port, fault alarm relay contacts
Transmission distance: Up to 100 meters over twisted pair; fiber transmission distance via SFP modules is determined by the single-mode/multi-mode optical module used
Operating temperature range: -40°C ~ +70°C
Protection & immunity: High-level EMC electromagnetic compatibility, vibration resistance, ESD electrostatic protection, metal grounding terminals
Compliance certifications: UL60950, IEC61850-3, EN50121-4, ISA12.12.01 Class I Div.2
HiOS Software Specifications
Switch redundancy: Multiple industrial ring redundancy protocols including ERPS, MRP, MSTP and RSTP, with fault recovery time ≤ 20 ms
Traffic management: 8-level CoS queues, port bandwidth shaping, broadcast/multicast storm suppression
Network segmentation: 4096 VLAN groups, port isolation, private VLAN, LACP link aggregation
Security mechanisms: ACL access control, 802.1X port authentication, SSH encrypted management, multi-tier password authority, unauthorized MAC address locking
O&M functions: HTML5 web management, SNMPv3, Syslog logging, port mirroring, SD card-based configuration import & export
Expansion options: Layer 3 static routing and unicast forwarding available after paid upgrade with HiOS 3A license
Application Industries
Power substations, photovoltaic & energy storage power stations, wind turbine pitch control communication cabinets, compatible with IEC61850 digital power distribution networks
Rail transit including metro, tram and on-board locomotive communication, meeting requirements for on-board vibration and wide-temperature operation
Class I Div.2 hazardous areas in petrochemical and oil & gas mining sites; Class I Div.2 explosion-proof certification ensures on-site safety
Automated communication networking for smart manufacturing production lines, robot workstations and large assembly lines
Outdoor cabinets at ports, terminals and large logistics warehouses, supporting uninterrupted wide-temperature data transmission outdoors
Remote monitoring systems for non-explosive underground mining zones, water treatment plants and municipal sewage pump stations
Intelligent buildings, security surveillance for large industrial parks, centralized power supply networking for industrial WiFi APs
Product Comparison
- GRS1042-AT2Z (This model): Equipped with 10 copper ports and 2 fiber slots as base interfaces, PoE+ support and dual high-voltage power supplies. Optimized for centralized access of numerous copper-based terminals, ideal for production lines and PV power plants with dense field nodes.
- GRS1042-6T6Z: Comes with 6 copper ports and 6 fiber slots, featuring a larger number of optical slots. Preferred for substation and wind power projects dominated by long-distance fiber links.
- GRS1142: All ports and power terminals are rear-mounted, specially designed for wiring routed at the rear of cabinets. Its port configuration, power supply specifications and software functions are identical to the GRS1042 series.
- GRS1030 Series: Fewer total ports than the GRS1042; no 2.5G uplink SFP slots. Suitable for small control cabinets with limited nodes and tight budget constraints.
- GRS1020 Series: Compact low-port-count model without expansion slots for media modules, ruling out future capacity expansion. Matched with small standalone automated equipment.
Frequently Asked Questions
Q1: How to distinguish part numbers 135-002 and 135-001 during procurement, and how to select the right one for projects?
A1: 135-002 corresponds to the AT2Z port configuration (10 copper ports + 2 fiber slots), suitable for scenarios with large numbers of terminal cameras and sensors. 135-001 adopts the 6T6Z layout (6 copper ports + 6 fiber slots), which is the preferred option for substations and wind power projects requiring long-distance fiber transmission. Verify the material code before placing orders to avoid mismatched port configurations.
Q2: What is the maximum PoE+ output power per port on this unit, and what terminals can it power?
A2: The switch complies with IEEE802.3af/at PoE+ standards, delivering up to 30W per port. It can power industrial HD cameras, industrial WiFi APs, IP intercoms and field wireless data acquisition terminals.
Q3: Are extra accessories required if this switch is deployed in Class I Division 2 hazardous areas?
A3: The model code of this unit includes the A99 explosion-proof certification suffix, and the chassis is marked with Class I Div2 certification. Only explosion-proof terminal junction boxes and non-flammable cables are required; no additional explosion-proof peripheral devices need to be installed.
Q4: How many media modules are required to expand the unit to the maximum 28 ports?
A4: The unit comes with 12 fixed base ports, and each media module adds 8 ports. Two GMM expansion modules are needed to reach a total of 28 ports. Corresponding GMM media modules must be ordered together during procurement.
Q5: Will service traffic be interrupted if one power supply circuit fails?
A5: The dual power modules operate in independent parallel mode. There is zero switching delay upon single-circuit power loss, and communications on all ports remain uninterrupted. Only the alarm relay will send a fault signal to remind maintenance staff to replace the faulty power module.
Q6: What malfunctions will occur if the operating temperature exceeds +70°C, and how to resolve the issue?
A6: Excess temperature will trigger automatic port speed reduction and packet loss, and may even cause device reboot in severe cases. Solutions: Clear ventilation channels inside the cabinet, reduce heat-generating equipment within the cabinet, and replace with low-power expansion modules.
Q7: What is the troubleshooting sequence for failed SD card configuration import?
A7: 1. Confirm the SD card is formatted to FAT32; 2. Ensure the configuration file name complies with HiOS specifications; 3. Check that the card slot is not blocked by dust; 4. Verify no syntax errors exist in configuration parameters; 5. Rewrite the file after replacing the ACA31 adapter.
Q8: How to optimize unstable ring network recovery switching time?
A8: Check whether attenuation of fiber SFP modules exceeds standard limits, avoid overly long twisted-pair cables in ring links, unify the ring protocol across all switches (use either MRP or ERPS exclusively), and disable unused Layer 2 protocols to reduce the device’s computing load.
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