JOHNSON CONTROLS
230
FORM 201.23-NM2
ISSUE DATE: 3/9/2015
SECTION 7 - OPERATION
2 through 10VDC Reset Input
A 0 through 2VDC signal produces a 0% sound limit
(no change to max VSD freq). A 10VDC signal pro-
duces a 100% sound limit (max VSD freq equals min
VSD freq). The sound limit reset is ramped linearly be-
tween these limits as the input varies between 2VDC
and 10VDC. In order for this input to work properly,
the Remote Sound Limit must be programmed for 2
through 10VDC input (OPTIONS key) and Chiller
Control Board jumper JP6 placed in the “V” position.
0 through 20mA Reset Input
A 0mA signal produces a 0% sound limit (no change
to max VSD freq). A 20mA signal produces a 100%
sound limit (max VSD freq equals min VSD freq). The
sound limit reset is ramped linearly between these lim-
its as the input varies between 0mA and 20mA. In or-
der for this input to work properly, the Remote Sound
Limit must be programmed for 0 through 20mA input
(OPTIONS key) and Chiller Control Board jumper JP6
placed in the “mA” position.
4 through 20mA Reset Input
A 0 through 4mA signal produces a 0% sound limit
(no change to max VSD freq). A 20mA signal pro-
duces a100% sound limit (max VSD freq equals min
VSD freq). The sound limit reset is ramped linearly
between these limits as the input varies between 4mA
and 20mA. In order for this input to work properly,
the Remote Sound Limit must be programmed for 4
through 20mA input (OPTIONS key) and Chiller Con-
trol Board jumper JP6 placed in the “mA” position.
Summary of Contents for YCIV0157
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