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Bangladesh Distributor
Question
What is a substitute product for old H7ER Tachometers?
Answer
1.It depends on H7ER 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 | DC voltage | No-voltage | DC voltage | ||||
| Number of digits | 4 | 4 | 5 | 5 | 4 | 4, 5 | ||
| Screw terminals | Applicable encoder resolution | 1 P/R | H7ER-B | H7ER-BV | --- | --- | ||
| 10 P/R | H7ER-BV1 | |||||||
| 60 P/R | H7ER-B2 | H7ER-BV2 | ||||||
| 600 P/R | H7ER-BV3 | |||||||
| ntlp | H7ER-SBV | |||||||
| Wire-wrap terminals | 1 P/R | H7ER | H7ER-V | --- | --- | --- | ||
| 10 P/R | H7ER-V1 | |||||||
| 60 P/R | H7ER-V2 | |||||||
| 600 P/R | H7ER-V3 | |||||||
| DIP terminals | 1 P/R | --- | --- | --- | --- | H7ER-P | H7ER-VP | |
| 60 P/R | H7ER-V2P | |||||||
| (1) H7ER-N | (2) H7ER-NV | (3) H7ER-NV1 | (4) K3NR ntlp | (5) H7ER-N ntlp | ||||
Note: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 H7ER-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.
3.The substitute product in column (2) is H7ER-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.
4.The substitute product in column (3) is H7ER-NV1.
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.
The maximum revolution displayed must be adjusted using the counting speed switch.
5.There is no substitute in column (4) because H7ER-N series do not have wide range encoders.
The function can be replicated using a pre-scaling function such as the one provided by K3NR Digital Panel Indicator but the size will be significantly different.
6.There is no substitute in column (5) because H7ER-N series do not have PC board mounting models.
However, H7ER-N can be used in place of H7ER-P, H7ER-NV in place of H7ER-VP, and H7ER-NV1 in place of H7ER-V2P, if the mounting methods are not considered.
7.General Comparison of H7ER and H7ER-N
| Compared item | H7ER | H7ER-N |
| Number of digits | 4/5 | 4/5 |
| Character height | 6.7 mm | 8.6 mm |
| Max. revolutions displayed | 4 digits fixed: H7ER-B, -BV, -B2, etc. 5 digits fixed: H7ER-BV1, -BV2, -BV3N, etc. | 4 digits fixed: H7ER-N, -NV 5 digits, counting speed switch method: H7ER-NV1 |
| Battery replacement | Not possible | Possible (no PCB mounting models) |
K3HB-X
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