Options Rated Non-rep. Control Supply Alarm Rated operational
operational voltage voltage voltage output current
voltage type 30 A 50A
- 230 VACrms 650 Vp 4 - 32 VDC 24 VDC NPN, NO - RJCS1A23D50EPNO
PNP, NO - RJCS1A23D50EPPO
600 VACrms 1200 Vp 4 - 32 VDC 24 VDC NPN, NO - RJCS1A60D50EPNO
PNP NO - RJCS1A60D50EPPO
Auto- 230 VACrms 650 Vp 4 - 32 VDC 24 VDC NPN, NO RJCSR1A23D30EPNO RJCSR1A23D50EPNO
ranging PNP, NO RJCSR1A23D30EPPO RJCSR1A23D50EPPO
600 VACrms 1200 Vp 4 - 32 VDC 24 VDC NPN, NO RJCSR1A60D30EPNO RJCSR1A60D50EPNO
PNP NO RJCSR1A60D30EPPO RJCSR1A60D50EPPO
Solid State Relay
Current Sensing
Autoranging (option)
Number of poles
Switching mode
Rated operational voltage
Control voltage
Rated operational current
Terminal layout
Over-temperature protection
Alarm output type
Specifications are subject to change without notice (10.10.2006) 1
• AC semiconductor contactor
• Integrated current monitoring
• Zero switching (RJCS1A)
• Direct copper bonding (DCB) technology
• LED-indication
• Cage clamp output terminals
• 4-32 VDC control input
• Operational ratings up to 50 AACrms and 600 VAC
• Local and remote alarm status
• Set-point adjustable
• Time delay adjustable
• Local and remote setup
Product Description
Preliminary Datasheet
Ordering Key
The SOLITRON Midi Current
Sensing is a compact, singlephase SSR that is sensitive to
variations in load conditions in
industrial heating applications.
This microprocessor-based
device is ideal for detection of
partial load failure and to
ensure the highest process
quality. Current sensing is integrated inside to eliminate the
need to install an external current transformer. A membrane
“button” on the front is used to
effect a simple “teach in” of the
current setpoint. Alarm delay
time is set by a potentiometer.
A drop in setpoint current of
more than 13% will trigger an
open collector alarm. In the
case of the Autoranging RJCS
(RJCSR), an open collector
alarm is triggered with a load
deviation (drop/increase) in
setpoint current of more than
13%.
Up to 50 alarm outputs can be
connected in parallel to a standard PLC input. Typical conditions that can be detected are
heater break or open-circuit,
blown fuse, semiconductor
short-circuit and faulty power
connection.
Device over-temperature protection is integrated as a standard feature.
The product is ready to mount
on DIN-rail or chassis and
comes with integral heatsink.
The standard housing dimensions enable straightforward
replacement of alternative
products.
Solid State Relays
SOLITRON MIDI Current Sensing
Type RJCS, RJCSR
Type Selection
Options Switching Rated Control Rated Terminal Protection Alarm output
mode operational voltage operational layout type
voltage current
R:Autoranging A: Zero switching 23: 230 VACrms D: 4 - 32 VDC 30: 30 AACrms E: Contactor P: Over-temp. NO: NPN, Normally open
60: 600 VACrms 50: 50 AACrms protection PO: PNP, Normally open
Selection Guide
RJ CS R 1 A 60 D 50 E P NO
2 Specifications are subject to change without notice (10.10.2006)
Derating Curve
Dissipation Curve
AACrms
Surrounding temp. (Deg. C)
20 30 40 50 60
20
30
40
50
60
10
0
RJCS...30
RJCS...50
RJCS
Input Specifications
Supply Specifications
Control voltage range 4 - 32 VDC
Pick-up voltage 3.8 VDC
Reverse voltage 32 VDC
Drop-out voltage 1.2 VDC
Maximum control input current 1.5 mA
Response time pick-up ≤ 1/2 cycle
Response time drop-out ≤ 1/2 cycle
Thermal Specifications
Operating temperature -20 to +60ºC (-4 to +140 ˚F)
Storage temperature -40 to +100ºC (-40 to +212 ˚F)
Weight Approx. 380 g
Housing material PBT Flame retardant
Control terminal cable size
Min 1 x 0.5 mm
2
(1 x AWG20)
Max 1 x 4.0 mm
2
(1 x AWG12) or
2 x 2.5 mm
2
(2 x AWG14)
Mounting torque max. 0.6 Nm Posidriv 0 bit
Control terminal screws M3
Power terminal cable size
Min 1 x 4 mm
2
(1 x AWG12)
Max 1 x 25 mm
2
(1 x AWG3) or
2 x 10 mm
2
(2 x AWG6)
Mounting torque max. 2.5 Nm Posidriv 2 bit
Power terminal screws M5
Housing Specifications
Insulation
Rated insulation voltage
Input to output ≥4000 VACrms
Output to case ≥ 4000 VACrms
General Specifications
Alarm Specifications
Output current, i
o
≤50 mADC
Output voltage
NPN 1 + 0.15i
o
PNP Vcc - 1 - 0.15i
o
No. of outputs in parallel ≤50
Note: Based on 100% duty cycle
Power supply voltage, Vcc 24 VDC ± 15%
Max. supply current 22 mA (per device)
Max. PLC current @ 24VDC 275 µA (per device)
durning normal conditions
RJCS.1.23.. RJCS.1.60..
Operational voltage range 24 to 265 VAC 42 to 660 VAC
Non-rep. peak voltage 650 V
p
1200 V
p
Operational frequency range 45 to 65 Hz 45 to 65 Hz
Power factor ≥ 0.5 @ 230 VACrms ≥ 0.5 @ 600 VACrms
Approvals* UL, cUL
CE-marking
Ye s
Supply status indication Green LED, half intensity
Control status indication Green LED
Over-temperature alarm trip indication Red LED, intermittent
Alarm indication (excpect for over-temperature trip) Red LED
* Approvals for RJCSR... pending
45W
40W
35W
30W
25W
20W
15W
30A
50A
10W
5W
0W
0A 5A 10A 15A 20A 25A 30A 35A 40A 45A 50A
RJCS.1...30 RJCS.1...50
Rated operational current
AC51 @Ta=25ºC 30 AACrms 50 AACrms
Measuring range RJCS1A... - 8 - 50 ACrms
RJCSR1A... 0.3 - 30 AACrms 0.5 - 50 AACrms
Min. TEACH current RJCS1A... - 8 AACrms
RJCSR1A... 0.3 AACrms 0.5 AACrms
Min. partial load current RJCS1A... - 1.3 AACrms
RJCSR1A... 0.05 AACrms 0.083 AACrms
Non rep. surge current (t=10ms) 600 Ap 1900 Ap
Off-state leakage current @rated voltage and frequency < 5 mArms < 5 mArms
I2t for fusing (t = 10 ms) 1800 A2s 18000 A2s
On-state voltage drop @ rated current 1.6 Vrms 1.6 Vrms
Critical dV/dt off-state 1000 V/µs 1000 V/µs
~
~
LOAD
+
+
4-32VDC
0V24 VDC
-
2T1
1L1 5A3
3A1
4A26A4
Alarm/Remote
Specifications are subject to change without notice (10.10.2006) 3
RJCS
Output Specifications
Connection Examples
~
~
LOAD
+
+
4-32VDC
0V
24 VDC
-
2T1
1L1 5A3
3A1
4A26A4
Alarm/Remote
3A1: Control input 4-32VDC
5A3: Alarm output PNP open
collector
6A4: Supply 24VDC
4A2: GND 0V
3A1: Control input 4-32VDC
5A3: Alarm output NPN open
collector
6A4: Supply 24VDC
4A2: GND 0V
100k
150E
150E
100k
2T1
1L1
24V GND
Alm Ctrl
24 VDC
+
_
GND
PLC
OUTPUT INPUT
OUTPUT
OUTPUT
2T1
1L1
24V GND
Alm Ctrl
Notes:
1. Control input (terminal A1) and 24VDC supply (terminal A3) must have common ground
2. RJCS ... and PLC should be sourced from the same 24VDC supply
3. RJCS ... PO and RJCS ...NO should not be connected to the same alarm line
4. It is recommended that up to 6 identical loads are connected in parallel
4 Specifications are subject to change without notice (10.10.2006)
Alarm Operation
1.1 Current Setpoint
The current setpoint is the
nominal operating current that
is expected when all the heater
loads are functioning properly.
If the heater loads are faulty or
the supply voltage is not close
to the nominal level, the wrong
setpoint will be stored.
1.2 Initialisation
When the device is shipped,
no setpoint is stored in the
flash memory. Both green
and red LEDs will flash intermittently to indicate that a
setpoint must be stored
using the TEACH procedure.
1.3 Local Functions
Local functions can be activated by using the push
button on the front of the
device. While an alarm is
being issued by any SSR
connected to the common
alarm line, no local commands are accepted.
1.3.1 Local TEACH
Press and hold the push button for approximately 3 seconds. The red LED will flash
after each second. After the
LED flashes 3 times, release
the button. If the “teach” command has been accepted the
heater loads are automatically
switched ON. The red LED will
flash quickly 10 times. When
the current setpoint has been
stored successfully, the red
and green LEDs will scroll intermittently to indicate that the
TEACH procedure has been
completed.
It is very important to hold
the button down for only 3
flashes of the red LED to
make a successful TEACH.
If the TEACH procedure is
not successful, the device
will automatically reset to
factory default (i.e. no setpoint stored).
1.3.2 Local RESET
When an alarm has occurred
the device can be locally
RESET by pressing the push
button for 1 second. The red
LED will flash once. This will
reset the alarm. If the alarm
condition has been cleared
the device will return to normal operation. If the alarm
condition is still active, the
device will automatically go
back to alarm status.
1.3.3 Local TEST
In the absence of a signal on
the “control input” terminal, a
local TEST can be made by
pressing and holding the button for 5 seconds. After the red
LED flashes 5 times, release
the button. The device will
switch ON the loads for 1 second. This test detects if there is
an under-current or heater
break alarm condition.
1.4 Remote Setup
Procedure
Remote functions can be
activated with a PLC or any
other logic controller by
applying timed pulses to the
alarm terminal: >10V for
RJCS...PO and <10V for
RJCS...NO.
1.4.1 Remote TEACH
Apply a 3 second pulse. The
red LED will flash after each
second. After the LED flashes 3 times and the “teach”
command has been accepted, the heater loads (of all
SSRs connected to the
same alarm line) are automatically switched ON and
the red LED will flash quickly
10 times. When the current
setpoint has been stored
successfully, the red and
green LEDs will scroll intermittently to indicate that the
TEACH procedure has been
completed.
1.4.2 Remote RESET/
UNBLOCK
When an alarm has occurred
the device can be remotely
RESET by applying a 1 second pulse. A 1 second pulse
will also unblock local
TEACH of all SSRs connected to the similar alarm line.
The red LED will flash once.
This will reset the alarm. If
the alarm condition has been
cleared the device will return
to normal operation. If the
alarm condition is still active,
the device will automatically
go back to alarm status.
1.4.3 Remote BLOCK
Applying a 5 second pulse
will induce the device to
block local TEACH. After
this, no local TEACH com-
mands are accepted. To
unblock this situation, a
remote RESET must be
issued. If 24V supply is
removed, local TEACH
BLOCK is lost. Another
REMOTE BLOCK should be
issued.
2 Alarms
2.1 Alarm DELAY
A potentiometer on the front
of the device allows a time
delay on the heater change
alarm between 2s and 40s
for the RJCS1A... and
between 0 and 40s for the
RJCSR1A...
For an alarm signal to occur,
the alarm condition must
persist throughout this time
period. The alarm output is
enabled only after this time
delay has passed. However,
if the control input is disabled for a period of time
equal to four times the delay
setting, the internal alarm
delay count is reset automatically.
2.2 Relay remains OFF due
to Line Voltage Loss or
Thyristor Open Circuit
Failure.
The device generates one
pulse with duration of 7 seconds on the alarm terminal.
This alarm is non-latching.
The red LED remains ON
after this alarm condition
until a RESET is issued.
2.3 Heater Change.
A Heater Change alarm is
given if the current measured through the device is
13% less than the Current
Setpoint stored in the flash
memory. For the RJCSR1A...,
the heater change alarm is
given also in the case the
current measured through
the device is 13% more than
the current setpoint stored in
flash memory. The device
generates one pulse with
duration of 8 seconds on the
alarm terminal. The alarm
signal is non-latching. The
red LED remains ON after
this alarm condition until a
RESET is made. If the measured current changes to
within 10% of the Current
Setpoint, before the Alarm
DELAY time has elapsed,
the Alarm DELAY timer is
reset.
2.4 Over-temperature or
Over-current.
This alarm occurs if any one
of following two conditions
is true:
1. The device detects an
internal over-temperature
condition at any time during
operation and switches off
the output. The red LED
flashes intermittently.
2. A current above the nominal device rating is measured during current setpoint TEACH. This action
erases the current setpoint
from flash memory and both
red and green LEDs will flash
intermittently until a TEACH
procedure with an acceptable current is carried out.
In both cases, the device
generates one pulse with
duration of 9 seconds on the
alarm terminal. The alarm
signal is non-latching.
2.5 Thyristor Short Circuit.
The device generates one
pulse with duration of 10
seconds on the alarm terminal. The alarm signal is nonlatching.
The red LED remains ON
after this alarm condition
until a RESET is made.
2.6 Alarms Connected in
Parallel to one PLC Input
and one PLC Output.
For REMOTE operation, up
to 50 devices can be connected in parallel to at least
one PLC input. This PLC
input must also be connected in parallel to the PLC output. The PLC input must be
programmed to detect
alarms while the PLC output
must be programmed to
supply the pulses required
for REMOTE Setup. When
more than one device is present, pulses from the PLC
output or alarm pulses from
any device will cause the red
LEDs on all devices in parallel to flash intermittently for a
max. of 6.25 seconds. After
this time, if there is a device
in alarm condition, only the
red LED of that device will
be ON.
RJCS
Specifications are subject to change without notice (10.10.2006) 5
Example
The alarm delay is set at 2s
(min). If the full load current is
set at 30A, then there will be
an alarm condition if the current is under 26.1A for more
than 2s. (Any fluctutation in
the load current that is present for <2s will not be signalled – this is intended to
eliminate false alarms due to
short duration under-voltage
conditions on the supply
phase). If the control input
goes off within the 2s, the
alarm timer will not be reset
provided the control input
goes on again within 8s
(4x2s).
Alarm Operation
Alarm Condition
All dimensions in mm.
Reset Condition
RJCS
Dimensions
Derating vs. Spacing Curves (RJCS.1A...50)
Surrounding temp. (˚C)
Note: Based on 100% duty cycle
22.5mm
10.0mm
6.0mm
3.0mm
0.0mm
Load Current (AACrms)
6 Specifications are subject to change without notice (10.10.2006)
Setup and Alarms
Heater change alarm
Note: Above shows pulses for PNP device
RJCS
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