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P4701 (4700+) 1/4 DIN FM Approved High/Low Limit Control
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Most Configurations Are In Stock For Same Day
Shipment
We will advise immediately if your order will be
delayed
| The ISE/West 4700+ provides a programmable safety
cut out with optional outputs for annunciators and alarms. A latched relay
cuts power to the process if it exceeds the safe value. The unit must be
reset before the process can continue. Plug in direct replacement
for the N4700 / N4701 series.
We fully configure the
control prior to shipment so that it is truly plug & play. Configurations
can be easily modified if your requirements change.
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- High or low trip
- Exceed
& relay indicators
- 5 amp latched relay
- Configuration via PC
- Remote reset option
- RS485 comms
- 2 Annunciators or alarms
- PV retransmit option
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| | | | Features | | Output Configuration - Up
to 3 Total. 1 latching trip relay, max 2 alarms relays, max 2 DC linear
retransmit (PV or limit value).
Alarm 1 &
2 Types - Process high, process low, setpoint deviation, band,
logical OR alarms or trip annunciator.
Limit Action - Latching relay output when PV
exceeds set value. Selectable for high or low trip activation.
Output Reset Action - Limit output can be
reset only when exceed condition is absent. Local or remote reset
options.
Annunciator Reset Action -
Annunciator output can be reset at any time. Local or remote reset
options.
Human Interface - 4 button
operation, dual 4 digit 13mm & 10mm high LED displays. Exceed, output
& alarm indicators. Red Upper display / Green Lower Display Standard.
Red Upper/Lower Optional.
PC
Configuration - Configuration via PC only. Dedicated config
socket (comms option not required
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Input | | Thermocouple - J, K, R, S, T, B, L, C, Pt-Rh20% vs
Pt-Rh40% & N.
RTD - 3 Wire PT100, 50ohm per lead maximum
(balanced).
DC Linear - 0-20/4-
20mA, 0-50/10-50mV, 0-5/1-5/0-10/2-10V. Scaleable -1999 to 9999, decimal
point selectable.
Impedance -
>10Mohm for Thermocouple and mV ranges, 47Kohm for V ranges and 5ohm
for mA ranges.
Accuracy - +/-
0.1% of input span +/- 1 LSD (T/C CJC better than 1°C).
Sampling - 4 per second, 14 bit resolution
approximately.
Sensor Break
Detection - <2 secs (except zero based DC ranges), control
O/P's turn off, high alarms activate for T/C and mV ranges, low alarms
activate for RTD, mA or V ranges.
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| Limit Trip Relay -
Contacts SPDT 5Amp resistive at 240V AC, >100,000 operations
Alarm Relays - Contacts SPDT 2Amp resistive
at 240V AC, >500,000 operations.
SSR Drive - (Outputs 2 &
3 only) >10VDC into 500 ohm minimum.
Triac - (Output 2 & 3
only) 0.01 to 1AAC, 20-280Vrms 47-63Hz
Retransmit
Outputs - 0-20/4-20mA into 500ohm max, 0-10/0-5V into 500ohm
min. Accuracy typically +/- 0.25%.
Communications - 2 Wire RS485, 1200 to 19200 Baud,
West ASCII or Modbus selectable.
Remote
reset option - Allows remote latched relay and annunciator
reset, using volt free or TTL input (Reset = -0.6 to 0.8V, or contact
closure).
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| Operating
& Environmental | |
Temperature &
RH - 0 to 55°C (-20 to 80°C storage), 20% to 95%RH
non-condensing.
Power Supply -
100-240Vac 50/60Hz (standard) 7.5VA ; 20-50Vac 50/60Hz (option) 7.5VA &
22-65Vdc (option) 4W.
Front Panel
Protection - IEC IP66 (Behind panel protection is IP20).
Approvals and Certification - CE, UR,
cUR. & FM
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