Ectron 451, Instruction Manual

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ENCLOSURES
The pin assignments (Table 3-1) for the Model 451 are the same as for Ectron Models 352,
418, and 428 conditioner-amplifiers (except for excitation high) and Model 441A frequency-
to-voltage converter. Therefore, unless special features have been incorporated that would
preclude using the Model 451, enclosures, including Models E408, R408, R418, 4001 and
4005, designed for these models are compatible with the Model 451. Table 3-3 lists these
enclosures and what special connections must be made for the Model 451 to operate properly
in them. The Model 451 accepts power from 10.5 V dc to 32 V dc, so enclosures designed
for either 12 V or 28 V can be used.
Table 3-3 Adapting Ectron Enclosures for Model 451 Operation
Enclosure Changes Necessary
E408-6
Install jumpers for balance-limit resistor R5 (for each channel
of Model 451 operation) and connect the LVDT excitation-
input lead to J1-6, Pin F.
R408-14
Install jumpers for balance-limit resistor R5 (for each channel
of Model 451 operation) and connect the LVDT excitation-
input lead to J1-14, Pin F.
R418
Install jumpers for balance-limit resistor R1-14 (for each
channel of Model 451 operation) and connect the LVDT
excitation-input lead to J1-14, Pin H.
R418-M1028
Install jumpers for balance-limit resistor R4 (for each channel
of Model 451 operation) and connect the LVDT excitation-
input lead to J1-14, Pin F.
4001
See the particular schematic for the Model 4001 in use and
install the appropriate jumper to connect the Model 451 Pin
10 to the LVDT excitation-input lead for each channel of
Model 451 Operation.
4005
See the particular schematic for the Model 4001 in use and
install the appropriate jumper to connect the Model 451 Pin
10 to the LVDT excitation-input lead for each channel of
Model 451 Operation.
MODEL R418-7
The Model R418-7 is a 3
1
⁄
2
″
-high 19
″
-wide rack-mount enclosure, which can accommodate up
to 14 units such as Models 352, 418, T418, 428, 441A, and 451). The Model R418-7 is intended
for use with units such as the Model 451 or general-purpose amplifiers or thermocouple amplifiers
or conditioner-amplifiers employing full external bridges. Provision is made for balance-limit resistors
for each channel. This enclosure comes with mating connectors for all input and output connectors
and operates from a variety of power sources. See Table 3-4 for the list of all available models of
the R418 with their ac and dc power voltages.
Model 451 Operation
3-13