SXC-SK01-C8A8-205L — Online/Offline Controller with Lift Valves

SXC-SK01-C8A8-205L Offline Pulse Controller

An online/offline pulse controller for compartmented baghouses: 20 pulse-valve channels plus 5 lift-valve channels, configurable wait–settle–idle offline sequencing, digital status display, and Modbus-RTU communication to your PLC or DCS.

View Technical Specs Request a Quote

Xiechang® SXC-SK01-C8A8-205L offline pulse controller with 20 pulse-valve and 5 lift-valve channels

Technical Parameters

Core operating specification.

Pulse-Valve Channels20

Lift-Valve Channels5 (offline compartment valves)

Cleaning ModesOnline or offline, selectable

Input VoltageAC220V @50Hz or DC24V — either may be connected

Output VoltageDC24V

Output Current1.2A

Rated Power30W

CommunicationRS485 Modbus-RTU — remote control from host computer / PLC / DCS

Modbus Address / Baud RateAddress 0–127; baud 4800–115200 (default 9600)

Start Delay0–300 s

Pulse Width Range10–9999 ms in 1 ms steps (default 80 ms)

Pulse Interval Range1–600 s in 1 s steps (default 1 s)

Cycle Time Range0–9999 min (default 0 min)

Lift-Valve Wait Time0–60 s (default 8 s)

Lift-Valve Settle Time0–60 s (default 8 s)

Lift-Valve Idle Time0–999 s (default 10 s)

Trigger ModesTimed sequential / differential-pressure dry contact; remote dry-contact trigger

EnclosureTransparent hanging PC shell, 190 × 255 × 105 mm

Operating Environment−20°C to +60°C; relative humidity ≤85% (non-condensing)

Product Standards

Offline cleaning with lift valves, in one compact controller.

Online/Offline in OneSwitch between online cleaning and offline compartment cleaning without extra hardware

Lift-Valve SequencingDedicated wait, settle and idle timers coordinate the 5 lift-valve channels with pulsing

PLC/DCS ReadyModbus-RTU reports status and accepts parameter changes and remote start/stop

On-site Jog DebuggingFire valves one at a time from the panel during commissioning

Digital DisplaySegment display shows live pulse-valve channel, compartment and countdowns

Dual Power InputAC220V or DC24V supply on the same unit

Certifications

Third-party certified for this product line.

View all certificates →

CE Verification of EMC Compliance — SXC-SK01-C8A1/C8A8/C8A9 Pulse Controllers

🔍 Click to enlarge

Product Certification

Models covered (4)

SXC-SK01-C8A1 · SXC-SK01-C8A8 · SXC-SK01-C8A9 · SXC-SK01-C8A

CE Verification of EMC Compliance — SXC-SK01-C8A1/C8A8/C8A9 Pulse Controllers

Certificate No.	CEJS25020766656
Issued by	Global Testing Services Co., Ltd. (Shanghai)
Issued	2025-03-10
Valid until	2030-03-09
Standards	EN IEC 61000-6-2:2019, EN IEC 61000-6-4:2019, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A2:2021

Need the original PDF?

CE Certificate (LVD + EMC) — SXC-SK01-C8A Series Pulse Controller

🔍 Click to enlarge

Product Certification

SXC-SK01-C8A1 · SXC-SK01-C8A8 · SXC-SK01-C8A9

CE Certificate (LVD + EMC) — SXC-SK01-C8A Series Pulse Controller

Certificate No.	CLJS25091275734
Issued by	Global Testing Services Co., Ltd. (GTS)
Issued	2025-09-18
Valid until	2030-09-17
Standards	EN 61010-1:2010+A1:2019, EN IEC 61326-1:2021, EN IEC 61000-6-2:2019, EN IEC 61000-6-4:2019, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A2:2021

Need the original PDF?

Technical Drawings

Installation dimensions for this product.

🔍 Click to enlarge

SXC-SK01-C8A8-205L

SXC-SK01-C8A8-205L · 20+5 ch · offline pulse controller — Enclosure & Mounting Drawing

Clear PC plastic

Overall width	255 mm
Overall height	190 mm
Depth	105 mm
Mounting hole spacing (W)	234 mm
Mounting hole spacing (H)	174 mm

Need the wiring diagram or manual PDF?

Knowledge Base

Practical answers for this product.

View All

Applications

When should you choose the SXC-SK01-C8A8-205L, and what does its offline mode actually do?

Choose the SXC-SK01-C8A8-205L for compartmented baghouses that need offline cleaning: its “205L” layout pairs 20 pulse-valve channels with 5 lift-valve channels. In offline mode it isolates one compartment at a time — close the lift valve, wait for airflow to stop, pulse the bags in still air, let dust settle, reopen and move on — which cleans far more effectively than pulsing against ongoing airflow.

SXC-SK01-C8A8-205Loffline cleaning sequencelift valve coordination

Applications

What is the difference between online and offline pulse cleaning, and what do the lift-valve wait, settle and idle times mean?

Online cleaning pulses valves while the compartment keeps filtering; offline cleaning first closes a compartment’s lift valve to stop filtration, then pulses its bags, so dust settles into the hopper instead of re-depositing on neighbouring bags. Offline controllers sequence this with three timers: wait (after the lift valve closes, before pulsing), settle (after pulsing, before the lift valve reopens) and idle (pause before the next compartment starts).

online cleaningoffline cleaninglift valve

Contact

Email Sales Contact Form