19
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
to 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
Pre-determined 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 70E/70M 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 chan-
nels, 1, 2, 3 and 4 respectively.
6.14.3
Field Repair – resistors R1, R2, R3 and R4 plug in
and are easily replaced.
Unplug a bad resistor by pulling it from the socket
and replace with a 124 OHM,
1
/
4
watt, 1%, metal film
(no substitute). Cut leads and bend to fit sockets.
Resistors are also available from the factory.
NOTE: It is not always clear that a resistor is bad by
observation. It may be brown or black. The best way
to check is unplug the resistor and check with an
ohm-meter. DO NOT check resistors on board. It may
cause other problems and will not give a true reading.
6.14.4
Digital Inputs – as long as input power is derived from
the integral 24VDC power supply they are protected.
6.14.5
Digital Outputs – each output shall not exceed 1 AMP
@ 115 VAC (6 AMP inrush).
6.14.6
Power Supply – the power supply has inherent short
circuit protection, thermal overload shutdown, tran-
sient protection, and line noise filtering. To reset the
power supply cycle input power off and on.
6.14.7
Protection – fuse F1 located near terminal J4 (power
in) protects the power supply. It is rated 1 AMP fast
acting #3 AG.
6.14.8
Operator Interface – it is protected by the I/O board.
6.15
FAULT ISOLATION
Certain messages, common sense, observation, and
diagnostics allow fault isolation of an on-board fault.
6.15.1
CONDITION: RAM Error on the display and
auto/hand red LED on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
6.15.2
CONDITION: Comm Error in the display and pump 1
red LED is on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
CAUTION: Do not trigger outputs unless the resul-
tant action is known. Do not trigger all outputs on at
one time or trigger at random. Failure to follow these
instructions 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 dis-
connected prior to entering the control panel. Failure to
follow these instructions could result in serious per-
sonal injury, death, and/or property damage.
