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型式コードの説明
X20DI9371
X20: X20 distributed I/O system platform
から: デジタル入力
9371: モジュール仕様コード
- Main Electrical & Hardware Specifications
| アイテム | 仕様 |
| チャンネル数 | 16 デジタル入力 |
| 入力タイプ | 24 VDC sinking / sourcing compatible, IEC 61131-2 タイプ 3 |
| 定格入力電圧 | 24 VDC (operating range: 18～30 VDC) |
| Input Impedance | 約. 3.9 kΩ |
| Logic ON (1) Threshold | DC11V以上 |
| Logic OFF (0) Threshold | DC5V以下 |
| Input Current per Channel | ≈6 mA @24 VDC |
| Response Delay | 典型的な 0.1 MS; configurable hardware filter: 0.1 / 0.5 / 3 / 15 MS (parameter setting via software) |
| 絶縁方法 | グループの隔離: 4 channels per group, 合計 4 isolated groups |
| Isolation voltage between groups: 500 VAC | |
| バスインターフェース | X20 Link internal system bus |
| ステータス表示 | Independent LED for each channel; module power LED |
| 消費電力 | Typ. 1.8 W |
- 機械式 & 環境仕様
取り付け: 標準 35 mm DINレール, horizontal installation
寸法: W 40 mm × H 100 mm × D 76.5 mm
動作温度: -20 ℃ ～ +60 ℃ (inside control cabinet)
ストレージ / 輸送温度: -40 ℃ ～ +85 ℃
保護クラス: IP20 (キャビネット設置のみ)
認証: CE, UL 508, GL marine certification, EN準拠 61000 EMC industrial standards
- Internal Structure & 端子の定義
16 channels divided into 4 isolated groups:
Group1: CH0～CH3
Group2: CH4～CH7
Group3: CH8～CH11
Group4: CH12～CH15
⚠️ Important Wiring Rule: The common terminal of one isolated group must share the same 24 V polarity; Do NOT connect separate, non-referenced 24 V power supplies to different isolated groups, otherwise potential difference may damage the isolation circuit.
Wiring Configurations
- Sourcing Input (PNP センサー)
Sensor output connects to module DI terminal; module common terminals connect to 0V(GND)
- Sinking Input (NPN Sensor)
Sensor power terminal connects to 24V+, sensor output to DI terminal; module common terminals connect to +24V
- 動作原理
External digital sensor signal → Front-end RC hardware filter circuit → Optocoupler isolation group → Signal shaping circuit → X20 bus communication chip
The controller cyclically reads channel status via X2X/X20 CPU. Filter time parameters can be configured in Automation Studio to suppress contact bounce and interference pulses generated by inverters.
- Software Information
プログラミングソフトウェア: Automation Studio 4.0 and all later versions supported
Hardware Identification: Standard X20 device description built-in library, no extra GSD file required
Process Image: Automatic channel address mapping; support signal forcing & online signal monitoring
サポートされている機能: Channel diagnosis (no wire break detection, X20DI9371 does not support wire break diagnosis)
- モデルの比較 & Compatible Replacement
Comparison with similar models in X20 series
| モデル | チャンネル | Isolation Feature | 特徴 |
| X20DI9371 | 16から | 4 channels per isolated group | Standard general-purpose module, widely used in projects |
| X20DI9372 | 16から | Full channel individual galvanic isolation | For high-interference environments, multi-signals with different potentials |
| X20DI4371 | 4から | 4 channels per isolated group | Compact module for limited I/O points |
✅ Direct Replacement Conditions
If X20DI9371 is used in existing projects:
Upgrade for higher anti-interference performance: X20DI9372 (pin assignment compatible, no program modification required, wiring fully interchangeable; only difference is enhanced isolation performance)
❌ Not directly interchangeable: X20DI4371 has different channel quantity and terminal layout of base unit
- 典型的なアプリケーションシナリオ
工作機械, 包装機械, material handling conveyors, ゴム & plastic equipment, 水処理, general automation production lines
Signal acquisition: Proximity switches, 光電センサー, リミットスイッチ, 押しボタン, passive relay contacts
- 設置ガイドライン & トラブルシューティング
Strict Prohibitions
- Never apply voltage higher than 30 VDC, will permanently damage input circuits
- Do not connect two non-common-ground 24 V power supplies to different isolated groups
- Avoid parallel routing of signal cables and power cables (strong electrical interference leads to flickering signals)
一般的な障害
- Channel LED always ON: Signal wire short-circuited to ground; abnormal power supply for PNP sensor
- Signal intermittent fluctuation: Severe electromagnetic interference → increase hardware filter time; check shielding & 接地
- All channels in one group no signal: Loss of power supply to the corresponding group common terminal
- Compatible Base Units
Standard base: X20BM01 (screw terminal base)
Optional base: X20BM11 (spring-cage quick connect terminal)
Base must be ordered separately; terminal base is NOT included with the module!
X20DI9371 Terminal Pin Assignment
互換性のあるベース: X20BM01 (スクリュー) / X20BM11 (スプリング端子)
16 channels split into 4 galvanically isolated groups (4 それぞれのチャンネル)
Group1: CH0～CH3｜Group2: CH4～CH7｜Group3: CH8～CH11｜Group4: CH12～CH15
端子配列 (Top to bottom on base)
グループ 1 (CH0~CH3)
1: DI0
2: DI1
3: DI2
4: DI3
5: COM0 (Common terminal for Group1)
グループ 2 (CH4~CH7)
6: DI4
7: DI5
8: DI6
9: DI7
10: COM1 (Common terminal for Group2)
グループ 3 (CH8~CH11)
11: DI8
12: DI9
13: DI10
14: DI11
15: COM2 (Common terminal for Group3)
グループ 4 (CH12~CH15)
16: DI12
17: DI13
18: DI14
19: DI15
20: COM3 (Common terminal for Group4)
Wiring Specifications Recap
- PNP Sensor (Sourcing Input, Industry Standard)
All COM0/COM1/COM2/COM3 → connect to 24 VDC 0V(GND)
Sensor signal wire to DIx, sensor positive terminal to 24V+
- NPN Sensor (Sinking Input)
All COM0/COM1/COM2/COM3 → connect to +24 VDC
Sensor signal wire to DIx, sensor negative terminal to 0V
⚠️ Important: COM0/COM1/COM2/COM3 are galvanically isolated from each other.
Do not connect different COM terminals to power supplies with non-shared ground potential!
Steps to Configure Input Filter in Automation Studio
- Locate X20DI9371 in project tree and double-click to open configuration window
- パラメータ名: Input filter time
Selectable options:
0.1 MS (速い応答, for high-speed signals)
0.5 MS
3 MS (recommended for normal pushbuttons & 近接スイッチ)
15 MS (heavy interference environment, suppress contact bounce)
- Download project; parameters take effect immediately without power cycle
