H7ET-BM Omron, H7ET-BM Datasheet - Page 5

• Manufacturer Part Number: H7ET-BM
• Description: COUNTER 999KHRS W/PB RESET
• Manufacturer: Omron
• Series: H7ETr

Specifications of H7ET-BM

• Operating Mode: Accumulative
• Output Type: None
• Voltage - Supply: None Required (Battery Included)
• Termination Style: Screw Terminal
• Display Type: LCD Non-Backlit
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption
• Other names: Z871

H7ET
1. Contact input (voltage input through a relay or switch
1. Contact input (input by a relay or switch contact)
Operations
The decimal point on models with 0.1 hour and 0.1 minute
displays blinks every other second while an input signal is
being applied. If the decimal point is not blinking, the input
signal is not being received correctly. Check the input signal
connections.
Determine the maximum counting speed of the counter by
evaluating the input conditions listed in the table at right.
contact)
DC VOLTAGE INPUT TYPE
NO-VOLTAGE INPUT TYPE
INPUT VERIFICATION WITH THE H7ET TIME COUNTER
SELECTING THE H7ET TOTALIZING COUNTER
Terminals (2) and (4)
are internally connected.
Terminals (2) and (4)
are internally connected.
Reset
Counting speed
Contact
signal input
Solid-state
signal input
2. Solid-state input (open collector input of an NPN
2. Solid-state input (open collector input of an NPN
For models with 0.1 second displays, the decimal point does
not blink. The input signal causes the right-most digit to
increment frequently enough to observe whether or not the
input signal is being received correctly. If the display does not
increment, the input signal is not being received.
transistor)
transistor
20 or 30 cps
Relay or switch
contact input with
some chattering.
Low-speed
transistor inputs
Terminals (2) and (4)
are internally connected.
Input
Terminals (2) and (4)
are internally connected.
H7ET-V
Reset
1 kcps
Do not input contact
signal inputs.
Chattering is counted
as signal input.
High-speed transistor
inputs
H7ET
5