York YD, Схема подключения

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JOHNSON CONTROLS
16
FORM 160.79-PW2
ISSUE DATE: 01/31/2019
SECTION 2 - FIELD CONTROL MODIFICATIONS
For example, if the input is 5VDC and the
Remote Reset Temp. Range setpoint is programmed
for 40°F, the setpoint would be set to 43.8°F.
OFFSET (°F) = (5 – 2)(10)
8
= (3)(10)
8
= 30
8
SETPOINT (°F) = 40 + 3.8
= 43.8°F
0-20mA - As shown in Figure 19 on page 16, con-
nect input to Microboard J22-4 (signal) and J22-5
(Gnd). A 0mA signal produces a 0°F offset. A 20mA
signal produces the maximum allowed offset (10 or
20°F above the local setpoint value). The setpoint is
changed linearly between these extremes as the input
varies over the range of 0-20mA. This input will only
be accepted when Analog Remote Mode is selected,
the Remote Analog Input Range setpoint is set for
“0-10VDC” and Microboard Program Jumper J24 has
been placed on pins 1 and 2. Calculate the setpoint for
various inputs as follows:
OFFSET (°F) = (MA)(REMOTE RESET TEMP RANGE)
20
SETPOINT(°F) = LOCAL SE OFFSET
For example, if the input is 8mA, the Remote Reset
Temp Range Setpoint is programmed for 10°F and the
Local Leaving Chilled Liquid Temperature setpoint
is programmed for 40°F, the setpoint would be set to
44°F as follows:
OFFSET (°F) = (8)(10)
20
= (80)
20
= 4°F
SETPOINT (°F) = 40 + 4
= 44°F
LD04501
FIGURE 19 -
REMOTE LEAVING CHILLED LIQUID
TEMPERATURE SETPOINT WITH 0-20MA OR
4-20MA SIGNAL
4-20mA - As shown in Figure 19 on page 16, con-
nect input to Micro Board J22-4 (signal) and J22-5
(Gnd.). A 4mA signal produces a 0°F offset. A 20mA
signal produces the maximum allowed offset (10 or
20°F above the Local setpoint Value). The setpoint is
changed linearly between these extremes as the input
varies over the range of 0-20mA. This input will only
be accepted when Analog Remote Mode is selected,
the Remote Analog Input Range setpoint is set for
“2-10VDC” and Microboard Program Jumper JP24
has been placed on pins 1 and 2. Calculate the setpoint
for various inputs as follows:
OFFSET(°F) = (MA – 4)(REMOTE TEMP. RESET RANGE)
16
SETPOINT(°F) = LOCAL SE OFFSET
For example, if input is 8mA, and the Remote Reset
Temp. Range setpoint is programmed for 10°F and the
Local Leaving Chilled Liquid Temperature setpoint
is programmed for 40°F, the setpoint would be set to
42.5°F as follows:
OFFSET (°F) = (8 – 4)(10)
16
= (4)(10)
16
= 40
16
= 2.5°F
SETPOINT (°F) = 40 + 2.5
= 42.5°F
REMOTE LEAVING CHILLED LIQUID
TEMPERATURE SETPOINT WITH PWM
SIGNAL
PWM
– The Pulse Width Modulation input is in the
form of a 1 to 11 second relay contact closure that ap-
plies 115VAC to the I/O Board TB4-19 for 1-11 sec-
onds. As shown in Figure 20 on page 17 , connect
dry closure relay contacts between I/O Board TB4-19
(input) and TB4-1 (115VAC). A contact closure time
(pulse width) of 1 second produces a 0°F offset. An 11
second closure produces the maximum allowed offset
(10 or 20°F above the local setpoint value).