-
-
'15 • HM-T-246
Table: External inputs
Caution
E xternal
input
CnS
System full-stop input
contact
Stopped when open.
CnS
Derate input
Input when open.
Snow protection fan control input
Set with main and sub devices respectively.
E xternal
output
Operation output
DC V
output
operation.
E rror output
*
(d) Transition of external inputs (level inputs) and operation statuses
Fig. Control PCB in CO
2
heat
pump water heater
CnG1
CnG2
[Instrumentation case ]
* Normally-open contact relay
CNG1
1
Operation input
2
1
Pause input
2
CNG2
Operation
comman
Pause
command
Control panel procured
at site
Relay procured at site
Control PCB in Q-ton
(AC or DC output)
Connectors connecting to CnG1
and CnG2 are attached to the
control BOX. (3 pcs.)
* Non-voltage contacts are used to input to CnG1 and
CnG2. If non-voltage outputs are available from the
control PCB procured at site, it is not necessary to
provide relays at site.
[Case
]
> 30 minutes
> 30 minutes
> 30 minutes
> 30 minutes
[Case
]
It is prohibited to input signals simultaneously to CnG1 and CnG2. In case of the
instrumentation
above, it is necessary to delay next input by approx. 10 to 20
seconds.
Open
Operation status
Operation
Shorted
Pause
Operation
Pause
CnG1
operation
input
CnG2
pause
input
Pause
Open
Shorted
Open
Operation status
Shorted
CnG1
operation
input
CnG2
pause
input
Open
Shorted
Operation
Pause
Pause
Operation
Operation Operation
Pause
Operation continues even if CnG1
is opened. Input signal is invalid
because it
is at the falling edge.
CnG2 is short-circuited
to pause. Input signal is
valid because it is at the
rising edge.
Fig. Control PCB in CO
2
heat
pump water heater
CnG1
CnG2
[Instrumentation case ]
* Normally-open contact relay
CNG1
1
Operation input
2
1
Pause input
2
CNG2
Operation
comman
Pause
command
Control panel procured
at site
Relay procured at site
Control PCB in Q-ton
(AC or DC output)
Connectors connecting to CnG1
and CnG2 are attached to the
control BOX. (3 pcs.)
* Non-voltage contacts are used to input to CnG1 and
CnG2. If non-voltage outputs are available from the
control PCB procured at site, it is not necessary to
provide relays at site.
[Case
]
> 30 minutes
> 30 minutes
> 30 minutes
> 30 minutes
[Case
]
It is prohibited to input signals simultaneously to CnG1 and CnG2. In case of the
instrumentation
above, it is necessary to delay next input by approx. 10 to 20
seconds.
Open
Operation status
Operation
Shorted
Pause
Operation
Pause
CnG1
operation
input
CnG2
pause
input
Pause
Open
Shorted
Open
Operation status
Shorted
CnG1
operation
input
CnG2
pause
input
Open
Shorted
Operation
Pause
Pause
Operation
Operation Operation
Pause
Operation continues even if CnG1
is opened. Input signal is invalid
because it
is at the falling edge.
CnG2 is short-circuited
to pause. Input signal is
valid because it is at the
rising edge.
AMP Air Conditioning
www.ampair.co.uk | [email protected]
Содержание ESA30E-25
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