Hitachi SAMURAI Series Service Manual page 40

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.
32
SMGB0082 rev.1 - 07/2015
Terminal
board
Section arranged as a local work
Run/stop switch (to be
prepared locally)
Alarm output (DC24V, less than 0.8A)
More than
200ms
ON
Switch
OFF
Please keep more
than 5 minutes
Run
Chiller
unit
Stop
Relay coil for DC24V, etc. (to be prepared
locally) (The relay coil is powered on in
case of alarm) Please do not connect a
LED or a relay of internal diode type.
More than
200ms