Spirax Sarco GS25039-1-10-1810-FC Process Controller

ブランド: Spirax Sarco

Belongs to the GS-X series new-generation PID process controller (steam dedicated), used for closed-loop PID control of temperature, pressure and level in steam systems, supporting Industry 4.0 / IIoT and Ethernet communication. No official public document provides a full decoding table for this complete part number. GS25039 is the base material number. The subsequent -1-10-1810-FC stands for custom options, I/O, 出力, firmware version and certification suffix, which are internal order codes. You need to submit the full model number to Spirax Sarco China channels to obtain the original factory selection sheet.Input accuracy: 0.1% FS, high stability for temperature / pressure measurement, suitable for steam, お湯, heat exchange station, sterilization and clean steam applications

Heat exchange stations, steam desuperheating and pressure reduction, clean steam, 滅菌器, hot water temperature control, boiler TDS / blowdown control, condensate recovery system regulation.

Spirax Sarco GS25039 (GS-X Series, ドキュメントリファレンス: TI-P794-01 / IM-P794-03)

重要な注意事項: GS25039-1-10-1810-FC is a factory pre-configured FC version. Terminal layout follows the general GS-X base board, while I/O modules (-1, -10) are order-selected options. Always refer to the terminal label printed on the back of the controller itself for on-site wiring. The general terminal definitions below shall not replace the nameplate of this unit.

Standard Terminal Wiring Definition (General GS-X)

電源端子

L / N: AC power supply 100–240 V AC wide range

Protective earth PE: Instrument shield ground. Connect the shield of sensor cable only to this terminal at the controller side; do not ground both ends.

警告: Low voltage sensor loops (PT100, 4–20mA) must not be connected with 220 V AC and shall be isolated.

Sensor Input (IP1 Primary Input, IP2 Auxiliary Input)

PT100 (3-wire RTD, most common for temperature)

IP1+, IP1-, IP1-R: 3-wire RTD. Use shielded instrument cable for long runs and keep wire resistance balanced.

4–20 mA transmitters (プレッシャー / レベル)

IP1+ / IP1-: 電流信号. The controller provides isolated 24 V DC transmitter supply (SU+, SU-) and can directly power Spirax Sarco pressure / 温度トランスミッタ.

熱電対: IP1+, IP1-. Cold junction compensation parameters need to be set.

Digital DI (DIO1, DIO2)

Dry contact digital input (valve feedback, external interlock, remote start/stop), passive contact with internal pull-up.

制御出力 (OP1 / OP2 for main PID output, OP3 alarm relay)

サフィックス -10 in your model typically means isolated 4–20 mA analogue output (D1) for driving valve positioners such as SP7.

OP1+ / OP1-: 4–20 mA control output (孤立した), connected to valve positioner

OP3 (COM / いいえ / ノースカロライナ州): C-type alarm relay for high/low limit alarm and fault interlock

Other optional output types: リレー (R), bidirectional thyristor (T), logic output (L), determined by order code.

コミュニケーション

RS485: あ / B, Modbus RTU

Ethernet RJ45 port: Native high-speed Ethernet for iTools configuration, SCADA and IIoT upload. FC pre-configured units usually come with preset IP address.

Wiring Specification Notes

Separate sensor cables and power cables in different cable trays to avoid interference.
Shield cable rule: Shield grounded only at the controller end; leave the sensor end floating.
端子締め付けトルク: 0.4 N・m, conductor cross-section: 0.5–1.5 mm²
配線前に電源を切ってください. Verify I/O configuration and rear label before power-on. FC factory-configured units may differ from standard templates.
Troubleshooting Checklist for GS-X Steam PID Controller

Pre-operation: Back up parameters first. Use Spirax iTools software for backup to avoid configuration loss.

故障の症状	考えられる原因	トラブルシューティングの手順
① No display when powered on	1. Loss of supply, voltage below 90 VAC; 2. Internal fuse blown; 3. Loose power terminals; 4. Poor panel cable connection	Measure L-N AC voltage with multimeter; check terminals after power-off; inspect internal fuse; confirm it is not a 24 V DC model mistakenly wired to AC supply
② “OPEN / SENSOR” sensor break alarm	Broken RTD, open 4–20 mA loop, 逆極性, no transmitter supply, excessive wire resistance	1. Disconnect sensor and simulate signal at input terminal (PT100 resistance / 4 mA signal); 2. Check SU+ 24 V出力; 3. Verify three-wire resistance balance for 3-wire PT100; 4. Inspect cable damage
③ Unstable reading, drifting or fluctuating PV	Incorrect shield grounding, parallel routing with power cable, unstable transmitter supply, aged sensor, oxidized terminals	Separate power and signal cables; correct single-point grounding; 端子の増し締め; replace sensor for comparison test
④ PID no output, valve stays idle, PV/SV normal	Wrong output mode (マニュアル / auto / locked), hardware-output mismatch, open output loop, faulty positioner, triggered DI interlock	Switch to manual mode and force output to check 4–20 mA; verify output type in configuration; measure current at OP terminals; check DI interlock status; test valve positioner independently
⑤ Temperature / pressure hunting, unstable control	Mismatched PID parameters, auto-tune not performed, large valve dead band, long steam loop lag, too small PV filter	Run Auto-tune first; increase integral time appropriately; check valve for sticking; increase PV filter; use Spirax Sarco native steam algorithm for steam systems
⑥ OP3 alarm relay continuously energized / false alarm	Wrong alarm threshold, incorrect alarm logic (高い / 低い / センサーの故障), DI interlock alarm, latched alarm not reset	Enter alarm menu and read alarm code; confirm alarm latch status; check PV range; clear alarm latch
⑦ Communication failure (RS485 / イーサネット)	Mismatched IP / 駅の住所, inconsistent baud rate, 損傷したケーブル, reversed A/B wiring, firewall / switch isolation, iTools password lock	Check communication parameters; fit termination resistor for RS485 bus; ping Ethernet; FC factory-configured units have OEM encryption and firmware flash is not allowed
⑧ Panel keys no response	Keylock enabled, damaged panel, firmware exception	Unlock keypad; power cycle; read firmware status via iTools; do not flash generic firmware for FC custom firmware
⑨ Parameters lost after reboot	Configuration not saved, failed internal backup battery, flash memory fault	Save after every modification and back up via iTools; return for repair if parameter loss recurs

Steam-Specific Troubleshooting for GS-X
Desuperheating / heat exchange: PV fluctuation should first check blocked sampling pipe, condensate accumulation and sampling point in turbulent zone, not controller fault.
Valve position feedback: If valve position feedback is fitted, check 4–20 mA feedback loop; broken feedback will trigger valve position fault alarm.
FC = Factory Configured: Steam dedicated logic preloaded at factory. Do NOT reset to factory default, otherwise custom steam control logic will be lost and only Spirax Sarco can reissue configuration file.
Safe Maintenance Sequence
Isolate power, apply lockout-tagout
目視検査 (端子, ケーブル, 結露; high humidity in steam room easily causes terminal corrosion)
Continuity and insulation test
Inject simulated signal separately to distinguish sensor fault or controller body fault
Read alarm logs via iTools (alarm log is the most reliable fault source)
Check alarm code table first if alarm code exists

Spirax Sarco Full Product List (Sorted by Category, including GS-X)

Application scope: Complete steam & condensate system products, including steam trapping, pressure reducing, regulating, heat exchange, 測光, オートメーション, clean steam, boiler auxiliary and compressed air products, 選択用, spare part lookup and replacement reference.

Steam Traps
Float type F series: FT14, FT44, FT47, FT57, FTS14, FTC series
Thermodynamic TD series: TD32, TD42, TD52, TD32F, BTD52, UTD26
Thermostatic BT/MST series: MST21, BT6-B, BT6-M (hygienic clean steam), BTM7, BTS7
Pressure balanced: BP series
ポンプ & trap integrated automatic pump: APT14, APT14HC, PPC series
Trap station assembly: STS17.2, 4-bolt integrated trap station
Pressure Reducing Valves & Self-acting Control Valves
Direct acting pressure reducing valves: SRV461S, SRV463S, BRV, DRV series
Pilot operated pressure reducing valves: 25P, 26P, 44, DP27, DP143, CP30, PRV series
Self-acting temperature control valves: テレビ, TS series (no controller required for steam heat exchange temperature control)
Desuperheating & pressure reducing assembly DS series, injection desuperheater, venturi desuperheating module
電気 / Pneumatic Control Valves, アクチュエーター & Positioners
Valve bodies

Spira-trol K/L 2-way valves (KE71/KE73/LE43/LE63/KE61)

QL series 3-way valves (混合 / diverting)

85, 86, 89 micro-flow, 1000 シリーズ, 900 3-方法, 2003 high-pressure PRV, Revel high differential pressure labyrinth valve

STERI-TROL hygienic clean steam valves SAE6/SHE6/SQL6 (pharmaceutical clean steam)

Pneumatic actuators: PN9000, PN5700/6700, TN2000
Electric actuators: AEL5, AEL6, EL4600
Valve positioners: SP7 (Smart HART), EP500 (Electro-pneumatic positioner)
PID Controllers, 楽器 & Monitoring Systems (GS-X included)
GS-X series (GS25039 is this series, new steam dedicated PID with Ethernet IIoT)
SPC3x single-loop PID controller (simplified version)
Flow computer M850
Spiratec on-line steam trap monitoring system
B850 boiler house energy monitor
SIMS system management software (iTools configuration tool)
Level switch, magnetic level gauge, 温度 / pressure transmitters
Flow Meters
Gilflo ILVA, ILVA20 differential pressure steam flowmeter
VIM20, VLM30 Food+ hygienic vortex flowmeter
RIM20 insertion variable area flowmeter
TVA/TFA target flowmeter
ELM electromagnetic flowmeter
MVT10 flow acquisition system
Condensate Recovery, ポンプ & Flash Systems
FREME flash recovery system
EVC exhaust condenser (waste heat recovery)
Pressure powered condensate pump: P series, APT pump trap
Boiler feed tank system, blowdown system BBV bottom blowdown valve
Condensate heat unit EasiHeat DHW / EasiHeat HTG (hot water package)
Heat Exchangers
Turflow corrugated tube heat exchanger
SC20 sample cooler (boiler water sampling)
Clean steam heat exchanger, sterilization heat exchange module
Safety Valves, Isolation Valves & Pipe Fittings
Safety relief valve SV series, SRV safety relief valve
Bellows seal globe valve BSA3BD, SafeBloc DBB3 double block and bleed valve
Check valve CV, CVS10M hygienic check valve
Ball valve M10s, Y-filter, basket filter, clean steam filter FS-HC
Air vent AE30, air vent for water system
Trap test valve, isolation valve set, sampling valve set
Clean Steam / Hygienic Range (医薬品, Bio, 食べ物)

BT6-B / BT6-M hygienic steam trap

STERI-TROL control valve

CVS10M hygienic check valve

VLM30 food grade vortex flowmeter

Clean steam filter station, pure steam sampling module

Compressed Air Products (Spirax-Monnier sub-brand)

MF micro filter, ML3 oil mist separator, IL1 lubricator, air regulator, dryer accessories

Boiler Auxiliary & Water Treatment Monitoring

Boiler blowdown valve, TDS blowdown control module

Turbidity monitoring system, feedwater chemical dosing package

B850 boiler energy monitor

Steam Humidifiers & Steam Injection Systems

Steam humidifier, injection humidification module, venturi steam injector

Quick Index Guide

Prefix GS → GS-X controller (GS25039)

Prefix TD → Thermodynamic trap; FT → Float trap; BT → Hygienic thermostatic trap

AEL → Electric actuator; SP7 / EP500 → Positioner

ILVA / VIM / VLM → Flow meter

KE/LE/QL → Spira-trol control valve body

Spirax Sarco GS-X Series Controller List (TI-P794-01 Official Reference)

GS-X includes three main hardware platforms: GS-X1 / GS-X2 / GS-X3. Your GS25039 is the GS-X3 base part number. Suffixes are extended order codes for I/O, コミュニケーション, firmware and factory configuration and are not independent hardware part numbers.

書類: TI-P794-01 (Datasheet), IM-P794-03 (インストール & Operating Manual)

Base Hardware Models (3 Types)

ベースモデル	Panel Size	位置決め	Main Hardware Features
GSX1	1/16 から (45×45 mm)	Compact single loop	1 ユニバーサル入力; optional output; optional transmitter supply; RS485 / イーサネットはオプション; for small cabinet and simple heat exchange control
GSX2	1/8 から (92×45 mm)	Standard single loop	1 main universal input, optional 2nd auxiliary input; 孤立した 24 V transmitter supply; RS485 / イーサネット; richer I/O options than X1
GSX3	1/4 から (92×92 mm)	Main model (GS25039 belongs here)	1 main universal input, optional 2nd auxiliary input; 孤立した 24 ワシントンDCで; maximum I/O capacity; native Ethernet IIoT; steam dedicated PID, widely used for heat exchange, desuperheating & sterilization with large display

✅ GS25039 = GS-X3 base part number

Full order format:

GS25039 [InputCode] [OutputCode] [ファームウェア] [サフィックス]

例: GS25039-1-10-1810-FC (FC = Factory Configured)

GS-X I/O Selection Order Codes (よく使われる)

Coding rule: GSxxxx InputCode OutputCode Firmware Suffix

Input Code

1: Universal input (測温抵抗体 / TC / 4–20mA / 0–10V, 最も一般的な, matches -1 in your model)

2: RTD dedicated version

3: Thermocouple dedicated version

4: 現在 / voltage dedicated version

Output Code (あなたのモデル -10)

01: リレー出力

02: Thyristor logic output

10: Isolated 4–20 mA analogue control output (for SP7 / EP500 valve positioner, mainstream for steam control valves)

11: 4–20mA + 警報リレー

12: Dual 4–20 mA

20: Dual relay

30: リレー + thyristor mixed

Firmware 4-digit code (e.g.1810)

Internal factory firmware package: distinguish general PID, steam heat exchange, desuperheating, EasiHeat matched, sterilizer dedicated program. Cross-version firmware flashing is prohibited; FC pre-configured units are bound to firmware package.

仕様コード

FC: Factory Configured (preloaded parameters, PID, 範囲, インターロック, IP)

FS: Factory Set (simple calibration, no complex logic)

アテックス: Explosion-proof version

HW: High humidity reinforced version (steam room)

FS-H: Food hygienic firmware

GSX Spare Parts & 付属品
GS-X-USB-CABLE: iTools configuration cable (USB to Ethernet / service port)
GS-X-BACKUP: Parameter backup package (free iTools software from Spirax Sarco website)
GS-X-PANEL-GASKET: Panel sealing gasket (ほこり & water proof, recommended for steam room)
GS-X-TERMINAL-KIT: Replacement terminal block kit
Platform Comparison (to avoid confusion with old models)

GS-X: 新世代, native Ethernet IIoT, 0.1% 正確さ, configured via iTools

SPC300 / SPC310: Previous generation single-loop controller (廃止, replaced by GS-X)

SX80 / SX90: Low-cost basic temperature indicator, not GS-X series

重要な注意事項
The manufacturer does not publish a complete list of all combinations. Many combinations are project-specific order codes only retrievable from Spirax Sarco internal selection system.
GS-X1/X2/X3 share the same software core and iTools compatibility, differing in terminal layout and I/O capacity.
Do NOT reset FC factory-configured units to factory default, custom steam logic will be lost and only the manufacturer can reissue configuration.
サポートされているプロトコル: Modbus RTU (RS485), Modbus TCP (イーサネット), compatible with SCADA, BMS and iTools.