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Remote Setpoints
There are three different Remote operating Modes that
can be selected at the Keypad: Analog Remote mode,
Digital Remote Mode or ISN Remote Mode.
The OptiView Control Center can receive a remote
Current Limit and/or a Remote Leaving Chilled Liquid
Temperature Setpoint via the following:
Analog Remote Mode
• 0-10VDC Analog Input
• 2-10VDC Analog Input
• 0-20mA An a log Input
• 4-20mA An a log Input
Digital Remote Mode
• Pulse width Modulation (PWM) Input
ISN Remote Mode
• RS-232 Serial Port via MicroGateway
The Analog inputs are connected to the Microboard
J22 as shown in Figure 12 and described below.
Microboard Program Jumpers JP23 and JP24 must be
po si tioned appropriately to receive either a 0-10VDC,
2-10VDC, 0-20mA or a 4-20mA signal. Refer to Table 1
"Microboard Program Jumpers" and explanation be low
for required confi gurations.
The PWM inputs are in the form of a 1 to 11 second Re-
lay contact closure that applies 115VAC to the I/O Board
TB4-19 (Leaving Chilled Liquid Temp) and TB4-20
(Remote Current Limit) for 1 to 11 seconds. Re fer to Fig-
ure 14. The source of 115VAC is I/O Board TB4-1. The
PWM input must be received at a fre quen cy of at least
once every 30 minutes. If not received with in this time
interval, the Program assumes the remote de vice is de-
fective and defaults the Current Limit Setpoint to 100%
and the Leaving Chilled Liquid Temperature Setpoint to
the locally programmed Local BASE val ue.
The Microboard COM 4B RS-232 Serial Port (J2)
re ceives the Setpoints in serial data form from the
MicroGateway located inside the OptiView Control
120
SECTION 19
REMOTE SETPOINTS
(See Figs. 12, 14 & 17)
Cen ter enclosure. The MicroGateway re ceives Setpoints
from re mote external de vic es and transfers them to the
Microboard.
CURRENT LIMIT
REMOTE CURRENT LIMIT SETPOINT with
0-10VDC, 2-10VDC, 0-20mA, 4-20mA or Pulse
Width Modulation Signal – The Remote Current
Lim it setpoint can be re set over the range of 100% to
30% Full Load Amps (FLA) by supplying (by others)
a 0-10VDC, 2-10VDC, 0-20mA, 4-20mA or 1 to 11
sec ond Pulse Width Modulated (PWM) signal to the
OptiView Con trol Center. The OptiView Control Cen ter
must be con fi g ured appropriately to accept the de sired
signal type as fol lows:
• The appropriate Remote Mode must be selected:
ANALOG Remote Mode must be selected when
using a voltage or current signal input. DIGITAL
Remote Mode must be selected when using a PWM
input.
• If ANALOG Remote Mode is selected, the RE-
MOTE ANALOG INPUT RANGE setpoint must
be set to "0-10VDC" or "2-10VDC" as de tailed be-
low, re gard less of whether the signal is a voltage or
cur rent input sig nal type.
• Microboard Program Jumper JP23 must be po si -
tioned appropriately per the input signal type as
de tailed be low. It is recommended that a qualifi ed
Service Tech ni cian position this jumper.
FORM 160.54-M1(503)
IMPORTANT! - The signal type used
for Re mote Cur rent Limit setpoint re-
set and the signal type used for Re mote
Leaving Chilled Liquid Tem per a ture
setpoint reset must be the same. For
ex am ple, if a 0-10VDC sig nal is be-
ing used for Remote Leaving Chilled
Liq uid Tem per a ture Reset, then a
0-10VDC sig nal must be used for Re-
mote Cur rent Lim it Reset.
YORK INTERNATIONAL
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