Bell & Gossett S12596B Technologic 350 Pump Controller User Manual
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6.10.5
Controller Operation – keyboard (except arrows, clear,
1,2,3 4) and all LED’s cannot change state. The dis-
play is dedicated to the analog input display. The pro-
gram is otherwise active.
6.10.6
Exit – press CLEAR once and then press ENTER
twice.
6.11
MANUAL CONTROL – OUTPUTS
To enter this section a user code (serial no.) is
required. Since the program is being overridden cau-
tion must be exercised.
IF NOT SURE CALL THE FACTORY. IF “USER
CODE” IS DISPLAYED PRESS THE ENTER KEY
TWICE TO RETURN TO NORMAL SCROLL.
DO NOT LEAVE UNIT IN SERVICE TEST.
6.12
DIGITAL OUTPUTS
6.12.1
To enter:
A. Normal scroll on display
B.
Press CLEAR twice
C. Press SERVICE TEST
D.
Press CLEAR twice
E.
Enter user code (serial no.)
F.
Press ENTER key
6.12.2
Display = output #1 through 8 on top line and state,
either 0 or 1, on bottom line. A “1” = output “on”
(relay coil energized) and a “0” = off. Toggle output
with a numerical key to match the output #.
6.12.3
Interpretation – this is an output forcing operation to
allow checking of wiring and the connected device.
Since some outputs are normally closed the following
must be observed.
Relay
Contact
Output
Relay
with a
Output
#
Function
#
State of 1"
Terminals
1
1M control
K5
Closed
J5 1-2
2
2M control
K6
Closed
J5 3-4
3
3M control
K7
Closed
J5 5-6
4
Alarm
K8
Open
J5 7-8
5
Pump 1 on
K1
Closed
J5 9-10
6
Pump 2 on
K2
Closed
J5 11-12
7
Pump 3 on
K3
Closed
J5 13-14
8
not used
K4
Closed
J5 15-16
Correlate output terminals to the wiring diagram for actual practice.
NOTE: It is important to view status on the display before any state is changed.
This shows the actual output state of the program as it was presently running.
6.12.4
Corrective Action – if a fault is suspected trigger the
associated output to confirm that either connections
or the connected device is the problem.
6.12.5
Controller Operation – all outputs are static and con-
trolled by the numerical keys. The program is static.
Confine operation to numerical keys. LEDs are static.
6.12.6
Exit – press CLEAR and ENTER. All forced outputs
are cleared.
6.13
PRE-DETERMINED FAULT AND FAULT CONTROL
6.13.1
Predetermined Fault – a software timer known as a
watch dog times out upon a software or CPU failure
and shuts down in a predicable manner. LED CR6 on
the I/O board turns on and all outputs are turned off.
OIP board components are now used to determine
the state of all relays according to LOGIC installed by
the factory.
6.13.2
Fault Control – operates as follows:
A.
Press START-STOP key for stop.
B.
Press AUTO-HAND key for HAND.
C. Enable pump/s as desired. (Press PUMP keys) to
run upon control failure.
D.
Press AUTO-HAND key for auto. Press START-
STOP key to start.
E.
Upon a CPU or software fault the unit will revert
to pumps selected in C above.
If power is momentarily interrupted the unit will return
to the same “hand” operation as before provided
pump keys were not pressed while the power was off.
6.14
PROTECTION
6.14.1
Analog inputs – the analog inputs provided on the
Technologic 350 must be wired according to the
wiring diagram that shipped with the unit.
6.14.2
Protection – all analog inputs are protected from high
voltage, crossed wiring, etc. A 1 AMP fuse (F1) fast
acting 3AG located just above relays K6, K7 and K8
protects all analog inputs up to 600V (in error only). A
sustained fault may blow this fuse and burn out the
input resistors. They are located just below terminals
J3 and are numbered R3, R4, R1 and R2 for channels
1, 2, 3 and 4 respectively.
6.14.3
Field Repair – resistors R1, R2, R3 and R4 plug in and
are easily replaced.
CAUTION: Do not trigger outputs unless the resultant
action is known. Do not trigger all outputs on at one
time or trigger at random.
Failure to follow these instruc-
tions could result in property damage and/or personal
injury.
WARNING: Electrical shock hazard. Multiple
power sources. The off position of the HAND-OFF-
AUTO switch does not disconnect all of the power
sources in the Technologic panel. All power sources must
be disconnected prior to entering the control panel.
Failure to follow these instructions could result in seri-
ous personal injury, death, and/or property damage.