Emerson Process Management Bristol Series 9110 - Manual (Page 28)

Board Setup 3-4 CI-9110
The relationship between an ON and OFF pulse time periods are shown by the following
two equations:
1) T on Minimum (sec.) = (.01 SR) + K
2) T off Minimum (sec.) = K
Where:
T on Minimum = Raise, Lower or Guard pulse
T off Minimum = Time between pulses.
S = Incremental step value (Table 3-2)
R = Rate of output change (Table 3-3)
K = .04 sec. with R/L filter active or 0.01 sec. with R/L filter turned
off. See Section 3.6 - "Output Rate of Change."
Table 3-2 - Switch SW1 (1-5), Pulse Increments
SW1-5 SW1-4 SW1-3 SW1-2 SW1-1
Output Change
(nominal, ±15%)
Close Close Close Close Close Disabled
Close Close Open Open Close 0.110%
/ Pulse
Open Close Close Close Open 0.182% / Pulse
Open Close Close Open Close 0.365% / Pulse
Open Close Open Close Close 0.730% / Pulse
Open Close Open Open Close 1.090% / Pulse
Open Close Open Open Open 1.280% / Pulse
Open Open Close Close Close 1.460% / Pulse
Open Open Close Close Open 1.640% / Pulse
Open Open Close Open Close 1.830% / Pulse
Open Open Open Open Open Continuous *
* Analog Regulator models must always have these switches
set for Continuous Mode.
3.4 INPUT FILTER
A raise or lower input signal can contain noise pulses of an amplitude sufficient to affect
the output. In these situations, switch SW1-8 can be set to activate an input filter. The
switch positions are given below. For Analog models, this switch must always be set to
OPEN.
SW1-8 Filter Status
Close Active
Open Inactive