GE DS3800HIMB1B1B

Parameters

• Input Type: 4–20mA (default), 0–10V DC, ±10V DC (jumper-configurable)

• Channels: 16 single-ended or 8 differential (configurable via jumpers)

• Resolution: 12-bit ADC

• Accuracy: ±0.08% of full scale (improved over A1’s ±0.1%)

• Input Impedance: 250Ω (current) / >1MΩ (voltage)

• Filtering: 50Hz/60Hz noise rejection (B1 feature)

• Isolation: 1500V RMS optical isolation (channel-to-backplane)

• Power: +5V DC @ 0.9A, +15V DC @ 0.25A

• Scan Rate: 80ms per channel (B1 optimized, faster than A1’s 100ms)

• Coating: Conformal coating (suffix B) – single-layer acrylic

• Temp Range: 0°C to +60°C

• Mounting: 6U VME Eurocard, single-slot

• Diagnostics: Enhanced LED status per channel (over-range, under-range, open-circuit, and signal noise alert)

Advantages & Features

• Higher channel density – supports up to 16 single-ended channels, doubling the capacity of HIMA series boards

• Flexible configuration – channels can be set as differential (8) or single-ended (16) via jumpers, adapting to different wiring schemes

• B1 firmware offers improved accuracy (±0.08%), faster scan (80ms), and built-in 50/60Hz noise filtering – a significant upgrade over A1

• Versatile input support – accepts 4–20mA, 0–10V, or ±10V signals, compatible with most industrial transmitters

• Isolated channels reduce ground loop interference and protect the backplane from field wiring faults

• Basic B-grade coating provides light moisture and dust protection for indoor installations

• Front-panel LEDs for per-channel status including signal noise detection alerts

• Compatible with Mark IV backplanes and some VIe systems (with adapter)

Application Cases

• Turbine inlet guide vane (IGV) position feedback – multiple 4–20mA LVDT transmitters in larger turbines with more feedback points

• Fuel gas pressure and flow monitoring – multiple 4–20mA transmitters in gas turbine fuel skids requiring noise filtering

• Steam pressure and flow monitoring – for steam turbine throttle, extraction, and reheat lines

• Lube oil pressure and temperature – multiple transmitters on bearing and sump systems

• Retrofit projects upgrading from A1 firmware for better noise rejection and faster response

Competitor Comparison

• vs. DS3800HIMA1B1B (A variant): Higher channel density (16 single-ended vs. 8 differential) – HIMB offers more channels; otherwise similar B1 firmware and B coating

• vs. DS3800HIMB (standard B variant): Improved accuracy (±0.08% vs. ±0.1%), faster scan (80ms vs. 100ms), and built-in noise filtering with B1 firmware

• vs. DS3800HIMA1C1D (C1/D variant): HIMB has basic B1 firmware vs. C1’s advanced features; HIMB offers more channels but lower accuracy, slower scan, lower isolation, and less coating protection

• vs. DS3800HSCB (high-speed analog input): HIMB offers more channels but slower scanning; HSCB is for dynamic signals

• vs. ABB TB711 : Similar channel count, but ABB offers higher resolution (14-bit) and PROFIBUS/Modbus communication

• vs. Siemens 7MH410 : Similar functionality, but Siemens offers HART protocol support on some variants

• vs. Woodward 8440-2015 : Similar channel count, but Woodward offers more flexible configuration software

• vs. Honeywell 51304638 : Similar channel count, but Honeywell offers better long-term stability (±0.05%)

Selection Suggestions

• Critical: Confirm input signal type (4–20mA, 0–10V, or ±10V) and channel configuration (differential vs. single-ended) before installation – jumper settings must match your transmitters

• Verify your backplane provides both +5V and +15V – this board requires both rails

• Assess channel count – 16 single-ended channels cover larger turbine installations with more transmitters

• Evaluate if B1’s noise filtering and faster scan rate are beneficial – particularly valuable near VFDs or in electrically noisy environments

• Determine accuracy requirement – 0.08% is sufficient for most turbine process variables

• Evaluate environmental conditions – B coating is suitable for clean, dry indoor installations; upgrade to C/D/G/H for more demanding environments

• Order mating front connector (p/n may vary – confirm with GE)

• For critical applications, consider used/refurbished units with 90-day warranty or new-old-stock with calibration certificate

Precautions

• Critical: Do not exceed 30mA or ±30V on input channels – overvoltage may damage the ADC and isolation circuits

• Critical: Use shielded twisted-pair cables for all analog inputs to avoid EMI – B1’s filtering helps but is not a substitute for good wiring practices

• Critical: Configure jumpers correctly for differential vs. single-ended wiring – incorrect settings will cause measurement errors

• Ensure field power supply (+24V DC) for 2-wire transmitters is stable and within specifications (if loop-powered)

• B1 firmware offers improved noise rejection – configure jumpers correctly for 50Hz or 60Hz based on your region

• Basic B coating does not protect against humidity or corrosive gases – upgrade to C/D/G/H if your environment has moisture or chemicals

• Allow 30-minute warm-up before calibration

• Store in ESD-safe packaging – edge connector is static-sensitive

• Periodically verify channel calibration every 2 years against a certified reference

• Do not hot-swap – Mark IV backplanes require power-off for insertion/removal

• If replacing a similar board, confirm pinout compatibility – HIMB may differ from HIMA or other series in wiring assignments