User's Manual
MS3705HB Slim Plug-In Digital Alarm Setter with Isolated Dual Output (High Accuracy Model)
Rev. 1.50
3
Upper Limit Alarm (Relay activated/deactivated by alarm condition)
Set value
Hysteresis
Hysteresis
Input
Relay
Relay
Mode: 0
Mode: 1
Deactivated
Activated
Input
Hysteresis
Hysteresis
Set value
Relay
Relay
Mode: 2
Mode: 3
Activated
Activated
Activated
Activated
Activated
Activated
Activated
Deactivated
Deactivated
Deactivated
Deactivated
Deactivated
Deactivated
Deactivated
5. External Dimensions & Terminal Assignments
Screw hole for
wall mounting
Screw hole for wall mounting
Fixing screw
6. Terminal Connection Diagram
Terminal
No.
7. Terminal Connection
The following steps should be taken prior to the connection.
8. Output Connection
When connecting an inductive load, such as an electric motor, to the
output, connect a relay contact protection circuit across the load as
shown below.
When AC-powered: When DC-powered:
Inductive Load
Inductive Load
9. Power Line Connection
The terminals for power supply connection (
①
and
②
) are covered
with a plastic plate for safety (see Fig. 1).
Open the cover plate and connect the power lines to the terminals
(see Fig. 2).
Return the cover plate to its original position (see Fig. 3).
4
5
1
2
P/+
N/-
4
5
4
5
Terminal Block
Cover
Note: For your safety, do not make any electrical connections or
disconnections with power supplied to the instrument. Make
sure that all terminal screws are properly tightened each time
you finish the tightening.
(1) Loosen the terminal screw.
(2) Insert the tip of a
screwdriver bit beneath
the washer and push it
up to make ample room
to receive a cable.
Fig. 1
Fig. 2
Fig. 3
Protection Circuit
(Varistor, CR circuit, etc.)
Protection Circuit
(Diode, varistor, CR circuit, etc.)
Lower Limit Alarm (Relay activated/deactivated by alarm condition)
