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Lead Contents

Substitute Product for Old H7EC Total Counters

FAQ No. FAQ03176

Primary Contents

Question

What is a substitute product for old H7EC Total Counters?

Answer

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

DisplayLCD (character height: 6.7 mm)
Operating modeIncremental type
Mounting methodFlush mountingDirect
mounting
on PC board
Count inputNo-voltage inputDC voltage inputMulti-voltageNo-voltage
input
Reset methodExternalExternal/ManualExternalExternal/ManualExternalExternal,
Power-OFF
Number of digits767677
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.

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).

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 itemH7ECH7EC-NRemarks
Number of digits6/78
Character height6.7 mm8.6 mm
Input signal levelDC 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 systemNon-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 replacementNot possiblePossible (except for PCB mounting models)

Note:

1.The high level 6 to 24 VDC of H7EC-N is cut, so choose a DC voltage input model.

2.Be careful when using the power-OFF reset.