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产品名称
VMIC+ASSY 11994R13 Rear-Transition Hot-Swap Terminal & Isolation Adapter
产品说明
VMIC+ASSY 11994R13 is the official rear-transition terminal block and signal-conditioning adapter engineered by VMIC (now Emerson PACSystems) to provide rugged, high-density field wiring for the VMIC+ASSY 11993R2 analog I/O board. VMIC+ASSY 11994R13 converts the board’s 68-pin SCSI-3 rear I/O into numbered spring-cage terminals while adding 500 Vrms channel-to-ground isolation, LED diagnostics, and optional cold-junction compensation. Designed for 6U VME64x racks, VMIC+ASSY 11994R13 supports hot-swap wiring changes without powering down the rack, cutting maintenance time to under two minutes. All critical signals on VMIC+ASSY 11994R13 are protected by IEC 61000-4-5 Level 3 surge devices, ensuring long-term reliability in harsh industrial environments.
产品参数
VMIC+ASSY 11994R13
• Terminal Count: 64 spring-cage positions (32 analog inputs, 8 analog outputs, 16 digital I/O)
• Max Continuous Voltage: 60 V per channel
• Isolation: 500 Vrms channel-to-ground, 250 Vrms channel-to-channel
• Surge Protection: IEC 61000-4-5 Level 3 (2 kV common-mode, 1 kV differential)
• Wire Range: 0.2–2.5 mm² (12 AWG max)
• LED Diagnostics: 32 bicolor LEDs (green=normal, red=fault)
• Cold-Junction Option: Plug-in CJC daughterboard for Type-K thermocouples, ±0.5 °C accuracy
• Connector: 68-pin SCSI-3 to front board, D-sub 50 + 20 spring terminals to field
• Mounting: Snap-fit DIN rail adapter or 6U VME rear-panel bracket (both included)
• Operating Temperature: –40 °C … +85 °C
• Certifications: CE, UL Listed, ATEX Zone 2, RoHS 3
• Max Continuous Voltage: 60 V per channel
• Isolation: 500 Vrms channel-to-ground, 250 Vrms channel-to-channel
• Surge Protection: IEC 61000-4-5 Level 3 (2 kV common-mode, 1 kV differential)
• Wire Range: 0.2–2.5 mm² (12 AWG max)
• LED Diagnostics: 32 bicolor LEDs (green=normal, red=fault)
• Cold-Junction Option: Plug-in CJC daughterboard for Type-K thermocouples, ±0.5 °C accuracy
• Connector: 68-pin SCSI-3 to front board, D-sub 50 + 20 spring terminals to field
• Mounting: Snap-fit DIN rail adapter or 6U VME rear-panel bracket (both included)
• Operating Temperature: –40 °C … +85 °C
• Certifications: CE, UL Listed, ATEX Zone 2, RoHS 3
优势和特点
• Hot-Swap Maintenance: VMIC+ASSY 11994R13 allows field wiring to be disconnected or re-terminated without rack power-down, minimizing production stoppages.
• LED Health Indicators: Each of the 32 analog channels is mirrored to a front-panel LED, enabling technicians to spot open-circuit or over-range faults at a glance.
• Wide-Gauge Spring-Cage Terminals: Accept stranded wire up to 12 AWG and reduce installation torque requirements to 0.5 N·m, cutting wiring time by 30 %.
• Optional Cold-Junction: A small plug-in CJC board snaps directly onto VMIC+ASSY 11994R13 terminals 1–8, converting them into high-accuracy thermocouple inputs without external hardware.
• Rugged Isolation: 500 Vrms isolation plus IEC 61000-4-5 Level 3 surge protection ensures safe operation in high-energy environments such as turbine halls or steel mills.
• LED Health Indicators: Each of the 32 analog channels is mirrored to a front-panel LED, enabling technicians to spot open-circuit or over-range faults at a glance.
• Wide-Gauge Spring-Cage Terminals: Accept stranded wire up to 12 AWG and reduce installation torque requirements to 0.5 N·m, cutting wiring time by 30 %.
• Optional Cold-Junction: A small plug-in CJC board snaps directly onto VMIC+ASSY 11994R13 terminals 1–8, converting them into high-accuracy thermocouple inputs without external hardware.
• Rugged Isolation: 500 Vrms isolation plus IEC 61000-4-5 Level 3 surge protection ensures safe operation in high-energy environments such as turbine halls or steel mills.
应用领域应用案例
• Gas-Turbine Monitoring: A North Sea offshore platform uses VMIC+ASSY 11994R13 to interface 32 dynamic pressure transducers on a GE Frame 9E turbine. The hot-swap feature allows sensor replacement during short maintenance windows without shutting down the 250 MW unit.
• Steel Rolling Mill Load Cells: A Chinese mill retrofitted its PLC rack with VMIC+ASSY 11994R13 to connect eight 350 Ω strain-gauge load cells. Spring-cage terminals reduced wiring errors, while the LED diagnostics cut troubleshooting time by 50 %.
• Wind-Turbine Test Bench: A German OEM uses VMIC+ASSY 11994R13 in a hardware-in-the-loop setup to route 690 VAC generator feedback signals safely into low-voltage analog inputs, leveraging the 500 Vrms isolation barrier.
• Steel Rolling Mill Load Cells: A Chinese mill retrofitted its PLC rack with VMIC+ASSY 11994R13 to connect eight 350 Ω strain-gauge load cells. Spring-cage terminals reduced wiring errors, while the LED diagnostics cut troubleshooting time by 50 %.
• Wind-Turbine Test Bench: A German OEM uses VMIC+ASSY 11994R13 in a hardware-in-the-loop setup to route 690 VAC generator feedback signals safely into low-voltage analog inputs, leveraging the 500 Vrms isolation barrier.
竞品对比
| Feature | VMIC+ASSY 11994R13 | NI TB-4330 | Acromag 805T-1500 | GE IC697ACC720 |
|---|---|---|---|---|
| Hot-Swap Terminals | Yes | No | Yes | No |
| Isolation | 500 Vrms | 300 Vrms | 1 500 Vrms | 250 Vrms |
| LED Diagnostics | 32 bicolor LEDs | None | 8 LEDs | None |
| Cold-Junction Option | Plug-in board | External | External | None |
| Wire Gauge | 0.2–2.5 mm² | 0.2–1.5 mm² | 0.2–4 mm² | 0.2–1.5 mm² |
| Temperature Range | –40 °C … +85 °C | 0 °C … +55 °C | –40 °C … +70 °C | 0 °C … +60 °C |
| Certifications | ATEX Zone 2 | CE only | CE, UL | CE, UL |
选型建议
Choose VMIC+ASSY 11994R13 when your application demands:
-
High-density, hot-swappable field wiring for VMIC+ASSY 11993R2 or similar 68-pin rear-I/O boards.
-
500 Vrms isolation and IEC surge protection in a single-slot rear-transition module.
-
ATEX Zone 2 certification for explosive atmospheres.
If 1 500 Vrms isolation is mandatory and hot-swap is not required, Acromag 805T-1500 offers a cost-effective alternative. For PXI-based labs, NI TB-4330 provides tighter software integration but lacks industrial temperature range.
注意事项
• Ensure rear-transition slot depth ≥25 mm; VMIC+ASSY 11994R13 occupies 22 mm behind the VME backplane.
• Use shielded twisted-pair for analog inputs longer than 3 m to maintain 90 dB CMRR.
• Torque spring-cage terminals to 0.5 N·m; over-torque can crack the housing.
• Firmware in upstream analog boards (e.g., VMIC+ASSY 11993R2) must be Rev D or later to enable automatic CJC readback from VMIC+ASSY 11994R13.
• Use shielded twisted-pair for analog inputs longer than 3 m to maintain 90 dB CMRR.
• Torque spring-cage terminals to 0.5 N·m; over-torque can crack the housing.
• Firmware in upstream analog boards (e.g., VMIC+ASSY 11993R2) must be Rev D or later to enable automatic CJC readback from VMIC+ASSY 11994R13.
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