Omron H7CX-A11-N Multifunction Counter: Comprehensive Guide for Industrial Automation

8 février 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What this delivery is: one Omron H7CX-A11-N multifunction counter, used, pulled from service and sold as-is with our standard check — received 2025-10-17, 0.5 kg, one piece, Made in China per the shell print. The H7CX-A11-N is the AC-supplied 8-digit preset counter in Omron's 48 × 48 panel-mount family: the shell legend reads OMRON H7CX-A11-N COUNTER, OMRON Corporation, MADE IN CHINA, with SOURCE 100–240 VAC, 50/60 Hz, 9.4 VA max printed beside the wiring diagram — the A11 suffix is the mains-supply build, so it hangs straight off a control transformer with no DC supply needed.

What the shell tells you before wiring

The rear face is a working reference card. The SWITCH SELECTION table maps every DIP switch: counting speed at 30 / 1k / 5k cps, input mode UP or DOWN, output time 0.5 s or 0.05 s, input signal width 20 ms or 1 ms, and NPN or PNP input polarity — so configuration is a screwdriver job on the switches, not a dive into menus. The output is a contact block rated 250 VAC 5 A resistive and 30 VDC 3 A resistive, with the motor and pilot figures printed alongside — 1/4 HP at 120 VAC, 1/3 HP at 240 VAC, B300 pilot duty — plus cULus Listed and CE marks. The front carries the large LCD, the MODE and RST keys at the left, and six digit keys across the bottom — one per preset digit — which is how the set-point gets entered in the panel, in the dark, without a laptop. The counter unplugs from an octal round-pin socket, so a swap is a screwdriver-and-two-minutes job.

Item	Value on the shell / record
Product	Omron H7CX-A11-N multifunction preset counter, 48 × 48 panel mount, octal plug-in
Supply	100–240 VAC, 50/60 Hz, 9.4 VA max
Contacts	250 VAC 5 A resistive; 30 VDC 3 A resistive; 1/4 HP 120 VAC; 1/3 HP 240 VAC; B300 pilot duty
DIP settings	Counting speed 30/1k/5k cps; UP/DOWN input mode; output time 0.5 s/0.05 s; input width 20 ms/1 ms; NPN/PNP input
Approvals / origin	cULus Listed (IND. CONT. EQ.), CE; Made in China
Condition / quantity / weight	Used, service-pulled; 1 pc; 0.5 kg; received 2025-10-17

Buying a used counter

A service-pulled H7CX is a sensible buy for two reasons: the part has no wear-out consumable — the LCD and keys either work or they do not, and ours have been checked — and the DIP-switch configuration means a used unit drops into an existing panel without reprogramming. Check two things on arrival against your old unit: the DIP switch positions (photograph the old board before you pull it) and the preset value stored in memory, which survives power-off and may belong to the previous machine. One honesty note from the record: this unit carries an in-service inspection sticker from its previous owner; we leave it on rather than cosmetically strip a used part.

Photos

Rear shell with DIP table — The rear reference card: SWITCH SELECTION table across the top, the N-F-C-K selector block, output contact diagram, K/P OFF–ON switch, and the SOURCE print — 100–240 VAC, 50/60 Hz, 9.4 VA max — above the octal pins.

Side shell legend — The side legend: OMRON H7CX-A11-N COUNTER, OMRON Corporation, MADE IN CHINA, with contact ratings — 250 VAC 5 A RES, 30 VDC 3 A RES, 1/4 HP 120 VAC, 1/3 HP 240 VAC, B300 PILOT DUTY — cULus Listed and CE, and the previous owner's inspection sticker at the vent.

Video walkthrough of the counter.

Front face — The front face: COUNTER over the LCD, MODE and RST keys at the left, and the six digit keys along the bottom — OMRON H7CX at the corner.

Front at an angle — The face at an angle: the six-key digit row and MODE/RST pair readable, the LCD window unscratched, ventilation slats along the left flank.

Rear at an angle — The rear at an angle: the wiring diagram and DIP legend across the top face, octal pin plug protruding, inspection sticker at the vent edge.

Octal pin base — Straight down the octal base: the round pin circle and centre key, shell mounting bosses at the corners, vent slots below — the plug-in format that makes swaps a two-minute job.

Rear from the opposite corner — The rear from the opposite corner: the DIP legend and wiring diagram again readable, the CE mark on the flank, and the octal plug's pin circle facing the camera.

Related products on KOEED

Same shelf family: the Omron H5CX-A11-N digital timer — the timing sibling with the same 48 × 48 format — and the H3CR-A8 multifunction timer for the classic dial-and-DIP workflows.

Need an H7CX-A11-N counter, another H7CX variant, or a preset-value check before you order used? Send the part number — we confirm stock with photos.

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