Toledo Transducers MoniTTor N269, Инструкция по установке и эксплуатации

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The N269 meter comes in a 14x12x6 green enclosure and should be mounted on or near the
press so as to be easily seen by an operator. USE THE 4 SHOCK MOUNTS PROVIDED
when mounting the enclosure to protect the electronic assemblies from excessive vibration.
All wiring connections to the N269 are made through the bottom of the enclosure and should use
flexible conduit. Do not run AC (power or relay) lines and sensor cables in the same conduit.
B. AC & POWER CONNECTIONS - POWER,RELAY,PROBE- See figure 2
The N269 meter requires continuous and filtered 115VAC power at 60 Hz. for proper
operation. Power consumption is less than 40 watts. In the event of AC power failure, a small
battery located on the N269 main PC board will retain the present information stored in memory
for a period of years.
Often the AC power provided at the press is not suitable for electronic equipment such as the
N269. We recommend a separate AC line to power the N269 if possible, additional filtering of
the AC power line may be necessary to obtain good performance of the meter.
To expose the AC power connections, open the N269 enclosure door and remove the
rectangular plate form the bottom of the cabinet. Behind the plate is the power supply circuit
board containing the connections for AC power, the 5 control relays, and the 115VAC probe
inputs. The wires must enter the enclosure through a hole situated behind this plate. The AC
power line is connected to the rightmost 3 terminals labeled L1, L2, and GND. Connect a good
earth ground to the terminal labeled. "GND". Connect the hot side of the AC line to the terminal
labeled "L1" and the neutral side to "L2". A one amp fuse protects the system and is electrically
connected on the "L1" or "hot" side.
The press shutdown relay contact connection is to the left of the AC power connection on the
terminal strip through terminals labeled R1 and R2. This contact is normally closed, but opens in
the event of an alarm OR the loss of AC power. The contact rating is 5 amps at 115VAC.
The BYPASS switch on the chassis is connected across the relay contact. When in
"BYPASS" (switch up) the switch shorts the relay contacts preventing shutdown even if an
alarm or AC power failure occurs.
The connections to the process control relays (RE,DE,IN & GO) are all labeled R1 and R2. In
addition the appropriate two letter designation is found below the terminal strip contacts. These
contacts are normally open. The contacts close when the relay is energized at the proper time.
All relay contacts are rated at 5 AMPS/115VAC.
The connections to the probes are optional. Most applications will not use probes. If you are
using them, each probe input has two terminals labeled P1 and P2. When the probe is "on" there
should be 115 VAC across P1 and P2. When the probe is "off" the voltage should be 0.
Normally some type of contact which switches the AC on and off is wired to these probe input
terminals. Extra L1 and L2 terminals are provided if a source of 115 VAC is needed for