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SECTION 1 - FIELD CONTROL MODIFICATIONS
REMOTE MODE READY TO START CONTACTS
When closed, these contacts signify the following:
14. The OptiView™ Control Center is in, "Hardwire"
or "BAS" remote operating mode, allowing for
energy management system or remote start/stop
control (See Figure 1 on page 8).
15. All chiller safety cutout controls are in the normal
position, so they will allow the unit to start.
16. All chiller cycling cutout controls are in the nor-
mal position, so they will allow the unit to start.
17. If applicable anti-recycle timer has timed out, a
closure of the Remote Mode Ready to Start Con-
tacts then signifies that the unit shall start when
the Energy Management System maintains the
Remote Stop Contact open and momentarily
closes the Remote Start Con tact. When the Re-
mote Mode Ready to Start Contacts close, the
OptiView™
Control
SYSTEM READY TO START message.
I/O
26
27
Board
TB4
FIGURE 1 - REMOTE READY TO START CONTACTS
CYCLING SHUTDOWN ALARM CONTACTS
When closed, these contacts signify that the unit is
not permitted to start due to a CYCLING shutdown
condition. The unit will automatically restart after the
cycling condition is no longer present. Refer to YZ
Operations and Maintenance (Form 161.01-OM1),
for a list and explanation of all Cycling Shutdowns.
While these contacts are closed, the OptiView™ Con-
trol Center will display CYCLING SHUTDOWN –
AUTO RESTART on the System Status Bar and the
cause of the shutdown on the System Details bar of
the display. Cycling Shutdown contacts function in all
operating modes.
8
Center
will
display
Field Wiring Terminal
Block in OptiView
Control Center
N.O. Contacts (in Control Center)
rated 2 AMPS inductive @ 250VAC,
5 AMPS resistive @ 250VAC
LD23504
I/O Board
40
41
TB5
N.O. Contacts (in Control Center)
rated 2 AMPS inductive @ 250VAC,
5 AMPS resistive @ 250VAC
FIGURE 2 - CYCLING SHUTDOWN ALARM
CONTACTS
SAFETY SHUTDOWN ALARM CONTACTS
When closed, these contacts signify the unit is not
permitted to start due to a SAFETY shutdown alarm
condition. Safety shutdowns require a manual reset
procedure to be performed before the unit can be re-
started. Refer to YZ Operations and Maintenance
(Form 161.01-OM1), for a list and explanation of all
the Safety Shutdowns. While these contacts are closed,
the OptiView™ Control Center will display SAFETY
SHUTDOWN – MANUAL RESTART on the System
Status Bar and the cause of the shutdown on the Sys-
tem Details Bar of the display. These contacts will re-
main closed until the safety condition no longer exists
and a manual reset is performed by pressing the Clear
Faults key on the control panel. After which the unit
restarts. Safety Shutdown Alarm contacts function in
all operating modes.
I/O
42
43
Board
TB4
FIGURE 3 - SAFETY SHUTDOWN ALARM
CONTACTS
FORM 161.01-PW2
ISSUE DATE: 7/18/2018
Field Wiring Terminal Block
in OptiVIew Control Center
LD23505
Field Wiring Term. Block
in OptiView Control Center
N.O. Contacts
(in Control Center) rated
2 AMPS inductive @ 250VAC,
5 AMPS resistive @ 250VAC
LD23506
JOHNSON CONTROLS
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