I. Model Disassembly (Key)

Z7116: Basic model, 16-channel DI module

3221: Internal material code of HIMA (equivalent to Z7116)

C5: Conformal Coating (three protection layers against moisture, mold, and salt spray), used in high humidity / corrosive / offshore platform environments

Complete Order Number: Z7116/3221/C5 (or 933221100-5)

II. Basic Information (Same as Z7116, with C5 Feature)

Brand: HIMA (Black Horse)

Series: HIQuad X / H41q / H51q (Old system, not compatible with X-series HIMax)

Type: 16-channel Digital Input (DI) module, C5 triple protection coating

Safety Level: SIL3 (IEC 61508), TÜV AK6

Adapter Backplate: H41q/H51q Rack Backplate (Not X-BASE-PLATE)

Input Voltage: 24 VDC (–15% ~ +20%)

Status: Old model, in use, replaceable spare parts, original imported

Environmental Enhancement: C5 coating → Suitable for marine, chemical, high salt spray / high humidity scenarios

III. Technical Parameters (Official, including C5 Differences)

Channels: 16 DI channels, 2 groups × 8 channels, group isolation

Input Type: Dry contact / Wet contact (NPN/PNP)

Input Current: ≈ 7 mA / channel @ 24 VDC

Power Consumption: ≈ 4 W

Isolation: Channel-to-channel isolation, group isolation, safety-level isolation

Diagnosis: Open circuit / Short circuit / Power failure detection, SIL3 safety diagnosis

Operating Temperature: –20 ℃ ~ +60 ℃ (C5 coating can withstand higher humidity)

Protection: IP20; C5 coating → Moisture-proof / Mold-proof / Salt spray-proof (Marine / High corrosion environment)

Size (Width × Height × Depth): 25 mm × 125 mm × 100 mm (8TE, H41q standard slot)

Weight: ≈ 0.35 kg

Coating: C5 triple protection coating (Whole board coating, anti-condensation, salt spray, mold)

IV. Core Functions (Same as Z7116, Enhanced Environmental Adaptability)

16-channel SIL3 safety digital input acquisition

Receive on-site ESD buttons, safety doors, pressure / level switches, F&G detectors, etc.

Hardware isolation + safety verification + redundant comparison, meeting SIL3 fault safety requirements

Fault safety diagnosis

Real-time detection and reporting of open circuit / short circuit / power abnormality for each channel to the CPU

Single-channel failure does not affect other channels, safety failure → system safety action

C5 triple protection enhancement (Key point)

Whole board moisture-proof, mold-proof, salt spray-proof coating, suitable for offshore platforms, chemical high-corrosion areas, high humidity environment

Ordinary Z7116 without coating, only used for conventional indoor / dry environment

V. Model Differences (Z7116 vs Z7116/3221/C5)

Z7116: Basic version, without coating, for regular environment (indoor, dry)

Z7116/3221/C5: C5 triple protection coating version, for harsh environments (offshore, chemical, high humidity / salt spray)

Fully compatible: Function, parameters, pins, backplate are common, only coating / environmental grade is different

VI. Compatibility Reminder (Must Read)

✅ Compatible: H41q / H51q / HIQuad X old system

❌ Incompatible: X-series (HIMax), completely incompatible with X-series CPU01 / X-SB01 / X-BASE-PLATE