Hitachi SAMURAI Series Service Manual page 36

2 Control Functions
Control functions on the module

Pulse input type 1
a. Signal aspect and basic sequence
For wiring
Time chart
?
N O T E
Pulse input indicates an ON input of the same switch when changing the status of the chiller unit, as shown in the diagram above.
28 SMGB0120 rev.0 - 11/2017
Terminal
board
Section arranged as a local work
Run/stop switch (to be
prepared locally)
Alarm output (DC24V, less than 0.8A)
Relay coil for DC24V, etc. (to be prepared
More than
ON
Switch
OFF
Keep more than 5
Run
Chiller
unit
Stop
locally) (The relay coil is powered on in
case of alarm) Do not connect a LED or a
relay of internal diode type.
More than
200ms
200ms
minutes