FAQ03176 of Counters FAQ

FAQ No. FAQ03176

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Question

What is a substitute product for old H7EC Total Counters?

Answer

1.It depends on the H7EC model. Refer to the following table.

Display		LCD (character height: 6.7 mm)
Operating mode		Incremental type
Mounting method		Flush mounting					Direct mounting on PC board
Count input		No-voltage input		DC voltage input		Multi-voltage	No-voltage input
Reset method		External	External/Manual	External	External/Manual	External	External, Power-OFF
Number of digits		7	6	7	6	7	7
External connections	Screw terminals	H7EC-B H7EC-BL	H7EC-BM H7EC-BLM	H7EC-BV H7EC-BVL	H7EC-BVM H7EC-BVLM	H7EC-FBV	---
	Wire-wrap terminals	H7EC H7EC-L	H7EC-M H7EC-LM	H7EC-V H7EC-VL	H7EC-VM H7EC-VLM	---	---
	DIP terminals	---		---		---	H7EC-P H7EC-LP
		(1) H7EC-N		(2) H7EC-NV		(3) H7EC-NFV	(4) H7EC-NP H7EC-NLP

Note:

1.Model numbers with "L" have a maximum counting speed of 30 Hz (cps). Other models are 1 kHz (cps). Only the models with a 20-Hz maximum counting speed have multi-voltage inputs.

2.The bottom row gives recommended substitute products or models with substitute functions. For details, refer to the following information.

2.The substitute product in column (1) is H7EC-N.

If a wire-wrap terminal was used, Y92S-37 Wire-wrap Terminals (two in one set) must be separately purchased and attached to the terminal block.
If manual reset is not used, the key-protect switch must be set to ON.
If the maximum counting speed was 1 kHz (cps), the counting speed switch must be set to 1 kHz (cps).

3.The substitute product in column (2) is H7EC-NV.

4.The substitute product in column (3) is H7EC-NFV.

If the high level was 6 to 24 VDC, H7EC-NV with DC voltage input must be used because if the DC high level of H7EC-FBV with multi-voltage input was 6 to 240 VDC, it becomes 24 to 240 VDC for H7EC-NFV.
If a wire-wrap terminal was used, Y92S-37 Wire-wrap Terminals (two in one set) must be separately purchased and attached to the terminal block.
If manual reset is not used, the key-protect switch must be set to ON.

5.There are two substitute products in column (4). The substitute product for H7EC-P is H7EC-NP, and H7EC-NLP for H7EC-LP because Totalizers with direct mounting on the PC board do not have the counter speed switch.

6.General Comparison of H7EC and H7EC-N

Compared item	H7EC	H7EC-N	Remarks
Number of digits	6/7	8
Character height	6.7 mm	8.6 mm
Input signal level	DC voltage input High level: 4.5 to 30 VDC Low level: 0 to 2 VDC Multi-voltage input High level: 24 to 240 VAC/6 to 240 VDC Low level: 0 to 1.5 VAC/0 to 2 VDC	DC voltage input High level: 4.5 to 30 VDC Low level: 0 to 2 VDC Multi-voltage input High level: 24 to 240 VAC/VDC Low level: 0 to 2.4 VAC/VDC	See note 1
Reset system	Non-PCB mounting model: External reset only, external/manual reset PCB mounting model: Power-OFF reset: 100 ms min.	Non-PCB mounting model: External/Manual reset (manual reset system has key-protect switching) PCB mounting model: Power-OFF reset: 500 ms min.	See note 2
Battery replacement	Not possible	Possible (except for PCB mounting models)