Raychem NGC-40-HTC & NGC-40-HTC3
Control and Monitoring Modules for use with Raychem NGC-40 System
Installation Instructions
DESCRIPTION
The Raychem NGC-40-HTC (for single-phase heaters) and NGC-40-HTC3 (for three-phase heaters) modules are used to control either an external solid-state relay or a contactor within the NGC-40 control and monitoring system. These modules also have one alarm output and one digital input. The alarm output can be used to activate an external annunciator. The digital input is programmable and may be used for various functions such as forcing outputs on and off. Other features include ground-fault and line current sensing for both HTC and HTC3. The front panel of the HTC modules has LED indicators for various status conditions. The front panel also provides a ground-fault and heater test button.
TOOLS REQUIRED
- Small flat-blade screwdriver
ADDITIONAL MATERIALS
- Power supply 24 Vdc @ 100 mA per NGC-40-HTC/HTC3
- Custom built CAN cables with RJ-45 connections
- CAN Termination Resistor
KIT CONTENTS
| Item | Qty | Description |
|---|---|---|
| A | 1 | NGC-40-HTC module (single-phase heaters) |
| or | ||
| B | 1 | NGC-40-HTC3 module (three-phase heaters) |
APPROVALS AND CERTIFICATIONS
Hazardous Locations
Class I, Div. 2, Groups A,B,C,D T4
Class I, Zone 2, AEx ec nC IIC T4 Gc IP20
Ex ec nC IIC T4 Gc X
-40°C ≤ Ta ≤ +65°C
Conforms to:
FM STD 3600 & 3611, UL STD 121201, 60079-0, 60079-7, 60079-15, 61010-1, 61010-2-201
Certified to:
CSA STD C22.2# 213, 60079-0, 60079-7, 60079-15, 61010-1, 61010-2-201
IEC Ex Markings:
IEC Ex ETL17.0062X
Ex ec nC IIC T4 Gc
ATEX Markings:
ITS17ATEX402833X
II 3 G Ex ec nC IIC T4 Gc
CE Mark
Special conditions of use:
- The overall equipment is evaluated to type of protection "ec".
- Sealed devices in the form of relays are additionally present in module NGC-40-HTC and NGC-40-HTC3 and comply with requirements for the type of protection nC.
- For full connection details see these installation instructions.
- The equipment shall only be used in an area of not more than pollution degree 2, as defined in IEC/EN 60664-1.
- The equipment shall be installed in an enclosure that provides a minimum ingress protection of IP54 in accordance with IEC/EN 60079-0.
- Transient protection shall be provided that is set at a level not exceeding 140% of the peak rated voltage value at the supply terminals to the equipment.
GENERAL
| Supply voltage | 24 Vdc ± 10% |
| Internal power consumption | <2.4 W per NGC-40-HTC/HTC3 module |
| Ambient operating temperature | -40°C to 65°C (-40°F to 149°F) |
| Ambient storage temperature | -55°C to 75°C (−67°F to 167°F) |
| Environment | PD2, CAT III |
| Max. altitude | 2,000 m (6,562 ft) |
| Humidity | 5-90% noncondensing |
| Mounting | Din Rail - 35 mm |
ELECTROMAGNETIC COMPATIBILITY
| Emissions | EN 61000-6-3 Emission standard for residential, commercial and light industrial environments |
| Immunity | EN 61000-6-2 Immunity standard for industrial environments |
TEMPERATURE SENSORS
| Type | 100 Ω platinum RTD, 3-wire, α = 0.00385 ohms/ohm/°C. Can be extended with a 3-conductor shielded cable of 20 Ω maximum per conductor. 100 Ω, Ni-Fe, 2-wire. Can be extended with a 2-wire shielded cable of 20 Ω maximum per conductor. |
| Quantity | One per NGC-40-HTC/HTC3 module |
ALARM RELAY
| Dry contact relay (voltage free) | Relay contact rated 250 V / 3A 50/60 Hz (CE) and 277 V / 3 A 50/60 Hz (cCSAus). Alarm relay is programmable. NO and NC contacts available. |
CONTACTOR OUTPUT RELAY
| Relay contact rated 250 V / 3A 50/60 Hz (CE) and 277 V / 3 A 50/60 Hz (c-CSA-us). |
DIGITAL INPUT
| Multi-purpose input | Multi-purpose input for connection to external dry (voltage-free) contact or DC voltage. May be user programmable for: not used / force off / force on functions. It can be configured to be active open or active closed. |
CAN NETWORKING PORT
| Type | 2-wire isolated CAN-based peer to peer network. Isolated to 24 Vdc – verified by 500 Vrms dielectric withstand test |
| Connection | Two 8-pin RJ-45 connectors (both may be used for Input or Output connections) |
| Protocol | Proprietary NGC-40 |
| Topology | Daisy chain |
| Cable length | 10 m (33 ft) maximum |
| Quantity | Up to 80 HTC/HTC3 and 10 modules per network segment |
| Address | Unique, factory assigned |
CONNECTION TERMINALS
| Wiring terminals | Cage clamp, 0.5 to 2.5 mm² (24 to 12 AWG) |
HOUSING
| Size | 45.1 mm (1.78 in) wide x 87 mm (3.43 in) high x 106.4 mm (4.2 in) deep |
LINE CURRENT SENSORS
| Max current | 63 A |
| Accuracy | ± 2% of reading |
GROUND-FAULT SENSOR
| Range | 10 – 250 mA |
| Accuracy | ± 2% of range |
OUTPUTS
| SSR output | 12 Vdc @ 45 mA max per output |
System Components
HTC
Front View:
Diagram showing the front of the NGC-40 CONTROL MODULE 1PH (HTC) with labels for STATUS, TS, NETWORK, HEATER, OUTPUT, GFI, INPUT, SWITCH, HEATER, ALARM, TEST, TEST, RESET. Also shows terminals labeled A, B, C, D, and GF.
Top View:
Diagram showing the top of the NGC-40 CONTROL MODULE 1PH (HTC).
Bottom View:
Diagram showing the bottom of the NGC-40 CONTROL MODULE 1PH (HTC).
Back View:
Diagram showing the back of the NGC-40 CONTROL MODULE 1PH (HTC).
HTC3
Front View:
Diagram showing the front of the NGC-40 CONTROL MODULE 3PH (HTC3) with labels for STATUS, TS, NETWORK, HEATER, OUTPUT, GFI, INPUT, SWITCH, HEATER, ALARM, TEST, TEST, RESET. Also shows terminals labeled A, B, C, D, and GF.
Top View:
Diagram showing the top of the NGC-40 CONTROL MODULE 3PH (HTC3).
Bottom View:
Diagram showing the bottom of the NGC-40 CONTROL MODULE 3PH (HTC3).
Back View:
Diagram showing the back of the NGC-40 CONTROL MODULE 3PH (HTC3).
System Components (Continued)
A. Wiring terminals
| Terminals | Function |
|---|---|
| 1 | Alarm relay N.O. |
| 2 | Alarm relay COM |
| 3 | Alarm relay N.C. |
| 4 | Not used |
| 5 | SSR Out + |
| 6 | SSR Out - |
| 7 | Digital In + |
| 8 | Digital In - |
| 9 | Line In |
| 10 | Line Out |
| 11 | Coil Out |
| 12 | TS COM (Wht) |
| 13 | TS Sense (Red) |
| 14 | TS Source (Red) |
| 15 | Not used |
WARNING: Shock Hazard. Disconnect from live voltage prior to accessing terminals.
B. CAN bus/Module power
C. RESET
D. STATUS LEDS
Status: Indicates status of HTC/HTC3 module
| Status | LED | Description |
|---|---|---|
| Off | No power | |
| Green | Normal operation, no internal faults | |
| Yellow | In Factory mode | |
| Red | HTC/HTC3 operating status | |
| Flash R | Internal Fault: | |
| Flash R/G | Factory status | |
| Flash R/Y | Internal fault detected |
Network: Indicates CAN network activity
| Status | LED | Description |
|---|---|---|
| Off | No network activity | |
| Green | Flicker on receipt of network data | |
| Yellow | Flicker on transmission of network data | |
| Flash R | Network communication failure |
Heater: Indicates the heater's alarm status
| Status | LED | Description |
|---|---|---|
| Off | No alarm | |
| Red | High or low current or resistance alarm | |
| Flash R | Overcurrent trip alarm |
TS: Indicates the temperature alarm status
| Status | LED | Description |
|---|---|---|
| Off | No alarm | |
| Red | High or low temperature alarm | |
| Flash R | Temperature sensor failure |
GFI: Indicates ground-fault status
| Status | LED | Description |
|---|---|---|
| Off | No alarm | |
| Red | High or low ground-fault alarm | |
| Flash R | Ground-fault trip alarm |
Switch: Indicates contactor/SSR switch status
| Status | LED | Description |
|---|---|---|
| Off | No alarm | |
| Red | Contactor cycle count alarm | |
| Flash R | Switch failed shorted on |
Input: Shows status of digital input
| Status | LED | Description |
|---|---|---|
| Off | Input is inactive (open) | |
| Green | Input is active (shorted) | |
| Flash R | Ext. input source failure |
Output: Shows status of contactor or SSR
| Status | LED | Description |
|---|---|---|
| Off | Output off | |
| Green | Follows output state |
Mounting the NGC-40-HTC/HTC3
Each NGC-40-HTC/HTC3 mounts on a DIN 35 rail.
MOUNTING: Insert the rear bottom of the module into the DIN rail, then push up and inwards to engage the clip.
Diagrams illustrating the mounting process.
REMOVAL: Push the module upwards to disengage the clip, then rotate the module toward you.
Diagrams illustrating the removal process.
Power Supply/CAN
The power supply/CAN connector is an RJ-45 connector. The CAN termination device must be installed in the unused port of the last module. Connections are the same for the HTC3.
Diagram showing HTC module with power supply/CAN connection and termination.
RTD Input Connections – North American Installation Technique
For all RTD terminations, the RTD field wires must be terminated on a panel-mounted terminal block. Connections are the same for the HTC3.
Diagram showing HTC module with RTD wiring connections to a terminal block.
RTD Input Connections – European Installation Technique
For all RTD terminations, the RTD field wires must be terminated on a panel-mounted terminal block. The RTD cable shield from the field terminal block to the HTC module should be terminated at the earth ground bar located near the module. Connections are the same for the HTC3.
Diagram showing HTC module with RTD wiring connections to a terminal block and earth grounding bar.
Power Supply/CAN
Terminals 9 and 11 switch voltage to the contactor coils. The internal pilot relay will switch the supply voltage (up to 277 V) to the contactor coil. Refer to the diagram at the end of this document called "NGC-40 CAN bus Connections for Up to 10 Modules" for detail wiring.
Note: Exposure to some chemicals may degrade the sealing properties of the relay output, manufactured by NAIS, PN JQ1P-12V. Periodically inspect the relay output for degradation of properties and replace if any degradation is found.
Connections are the same for the HTC3.
HTC Single-Phase Wiring Diagram
Diagram showing a single-phase HTC module connected to a contactor coil, with power supply and control wiring.
HTC3 Relay Output to Contactor - Three-Phase Wiring Diagram
Diagram showing a three-phase HTC3 module connected to a three-phase contactor coil, with power supply and control wiring.
WARNING: Shock Hazard. Disconnect from live voltage prior to accessing terminals.
HTC Output Connections to SSR - Single-Phase
Terminals 5 & 6 switch voltage to the SSR. The internal SSR driver will switch the internal supply voltage (12 Vdc) to the SSR.
Diagram showing a single-phase HTC module connected to an SSR, with wiring to the heater tracing.
HTC3 Output Connections to SSR - Three-Phase
Diagram showing a three-phase HTC3 module connected to an SSR, with wiring to the heater tracing.
WARNING: Shock Hazard. Disconnect from live voltage prior to accessing terminals.
Alarm
WARNING: Shock Hazard. Disconnect from live voltage prior to accessing terminals.
Note: Exposure to some chemicals may degrade the sealing properties of the alarm relay, manufactured by NAIS, PN JQ1P-12V. Periodically inspect the alarm relay for degradation of properties and replace if any degradation is found.
Multi-purpose. Alarm relay energized in normal state.
The alarm relay is configured as Fail Safe.
The alarm relay connections provide a form C dry contact, rated at 277 V max (3 A).
The NO (normally open) contact is open in non-energized condition. When energized, it closes during normal conditions and will open upon an alarm condition or power failure.
The NC (normally closed) contact is closed in non-energized condition. When energized, it opens during normal conditions and will close upon an alarm condition or power failure.
Relay contact rated:
- 250 V / 3A 50/60 Hz (CE)
- 277 V / 3A 50/60 Hz (c-CSA-us)
Connections are the same for the HTC3.
Diagram showing alarm relay configuration (Failsafe Mode).
Digital Input Connections - North American and European Installation Techniques
Digital Input
Multi-purpose input for connection to external dry (voltage free) contact or DC voltage.
Rating
100 Ω max loop resistance or 5-24 Vdc @ 1 mA maximum
Connections are the same for the HTC3.
Diagrams showing North American and European installation techniques for Digital Input.
Provide Suitable Panel Enclosure and Determine Locations for NGC-40-HTC or NGC-40-HTC3 Assembly in Panel*
1. Provide suitable panel enclosure
The NGC-40-HTC or NGC-40-HTC3 must be mounted in an enclosure to protect its electronic components. For indoor applications, use a minimum NEMA 1 enclosure (NEMA 12 recommended). For outdoor applications, use a NEMA 4 or NEMA 4X enclosure depending on the requirements.
Note: The Raychem NGC-40-HTC or NGC-40-HTC3 is designed for operation in ambient temperatures from -40°C to 65°C (-40°F to 149°F). If the ambient temperature is outside this range, a space heater and/or cooling fan will be required in the panel.
2. Determine locations for the NGC-40-HTC or NGC-40-HTC3 assembly in the electrical panel.
The NGC-40-HTC or NGC-40-HTC3 should be located in the rear of the panel. The NGC-40-HTC or NGC-40-HTC3 assembly is an electronic unit and must not be located where it will be exposed to strong magnetic fields or excessive vibration.
* North American panel installation techniques
Diagram showing a typical electrical panel layout with module placement.
NGC-40 CAN Bus Connections for Up to 10 Modules
Diagram illustrating CAN bus connections for up to 10 modules, including power supply and termination blocks.
NGC-40 CAN Bus Connections for Up to 20 Modules
Diagram illustrating CAN bus connections for up to 20 modules, including power supply and termination blocks.
NGC-40 CAN Bus Connections for Up to 40 Modules
Diagram illustrating CAN bus connections for up to 40 modules, including power supply and termination blocks.
Servicing
The NGC-40-HTC/HTC3 contains no user serviceable parts. Contact your Chemelex representative for service and an RMA number if required.
- WARNING: Explosion Hazard - Substitution of components may impair suitability for Class I, Division 2 hazardous and nonhazardous locations
- WARNING: Explosion Hazard - Do not replace NGC-40-PTM unless power has been switched off or the area is known to be nonhazardous
- WARNING: Explosion Hazard - Do not disconnect equipment unless power has been switched off or the area is known to be nonhazardous
AVERTISSEMENT - Risque D'explosion - La substitution de composants peut rendre ce matériel inacceptable pour les emplacements de Classe I, Division 2
AVERTISSEMENT - Risque D'explosion - Couper le courant ou s'assurer que l'emplacement est désigné non dangereux avant de replacer le NGC-40-PTM
AVERTISSEMENT - Risque D'explosion - Avant de déconnecter l'equipement, couper le courant ou s'assurer que l'emplacement est désigné non dangereux
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