Delta RowCool HCH1CB0, Руководство пользователя, Страница: 26 / 128

2 2
InfraSuite RowCool Precision Cooling –
Chilled Water
3.8.2 Control box
y
Front
(Fig. 3-17: Front of control box)
NETWORK COM
NET UPS
RESET
RS232 RS485 CAN
INPUT
OUT IN
OUTPUT
ALARM RACK REMOTE SENSOR
2
1
3 4 + - G
DISPLAY
n o p q r s t u v
w
No. Item Description
n
SNMP
card slot
This unit is compatible with an SNMP card (optional) and can be
connected with a workstation so as to monitor and manage the sys-
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-
chase separately) to connect the workstation and the SNMP card.
For SNMP card operation and setting, refer to its user manual.
o
RS232,
RS485 The RS232 or RS485 port allows you to connect a workstation or
power distribution device based on Modbus protocol for remote use.
p
CAN-Link
IN/OUT It is reserved for series connection of several cooling units. It adopts
one-Input one-Output mode.
q
/
r
Input dry
contacts
Normally open, for connecting the fire alarm or smoke detector.
When an event occurs, the dry contact device is triggered to form a
short circuit. The system will record it in the event log and shut down
the cooling unit.
Port
q
: Fire alarm
Port
r
: Smoke detector
s
/
t
Output dry
contacts
Connect two dry contact output devices and trigger the contacts at
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Port
s
(System alarm event): Normally open. Connect the dry
contact device to this port and the device will be triggered when an
alarm event occurs (close the circuit). You may set the triggering
conditions. Refer to
5.7.1 Local setting .
Port
t
(Start of cooling unit) Normally open. Automatically trigger
to form a short circuit at the start of the cooling unit to remind the
chiller to output chilled water and turn to the normally open status
until the cooling unit is powered off.